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O-Rings

O-rings are annular rubber packings used for pumps, hoses, gaskets, tank linings, diaphragms, etc. Used to prevent fluids such as water, oil, gas, chemicals, etc. flowing through machines such as pumps and hoses from leaking outside. Most of them are made of nitrile rubber or synthetic rubber, and there are two types for S-type fixation and P-type exercise. In addition, some products have different hardness and heat-resistant temperature, and some have excellent oil resistance, wear resistance, and aging resistance.

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  1. O-Ring P Series (for Dynamic)
    NOK O-Ring P Series (for Dynamic)
    An O-ring is an annular packing with an O-shaped (circular) cross section, which is generally mounted in a groove and compressed appropriately to be used as a seal for a wide variety of fluids such as oil, water, air, and gas.
    Type  For dynamic (P type)  Material  NBR-70-1 (type 1 A) NBR Nitrile Rubber  Hardness  70(±5)°  Withstand Pressure (MPa)  7  Heat Resistance Temperature (℃)  100 
    Rating:
    95%
    (145)
    from S$0.47
    Min. 2 days
  2. O-Ring S Type for Static (NBR)
    NOK O-Ring S Type for Static (NBR)
    An O-ring is an annular packing with an O-shaped (circular) cross section, which is generally mounted in a groove and compressed appropriately to be used as a seal for a wide variety of fluids such as oil, water, air, and gas.
    Type  For fixing S type  Material  NBR (Nitrile Rubber)  Hardness  70(±5)°  Heat Resistance Temperature (℃)  100 
    Rating:
    94%
    (138)
    from S$0.52
    Min. 2 days
  3. O-Ring P (For Dynamic, For Static) Fluoro Rubber
    MASUOKA O-Ring P (For Dynamic, For Static) Fluoro Rubber
    Has heat resistance and chemical resistance. Packing that requires heat resistance, oil resistance, and chemical resistance, corrosion resistant packing in chemical factories, gaskets, diaphragms, tank linings, hoses, pump parts, etc.
    Specification  Heat and chemical resistant  Material  JIS B 2401 Type 4 D (Fluoro rubber)  Hardness  70  Withstand Pressure (MPa)  7  Heat Resistance Temperature (℃)  200  RoHS directive (corresponding to 10 substances)  Correspondence 
    Rating:
    92%
    (206)
    from S$0.35
    Min. 2 days
  4. O-Ring P (Dynamic, Static) NBR
    MASUOKA O-Ring P (Dynamic, Static) NBR
    Good oil resistance, wear resistance, and aging resistance. Oil resistant products such as oil seals, gaskets, oil resistant hoses, conveyor belts, printing rolls, and spinning top rolls.
    Material  NBR (Nitrile Rubber)  Hardness  70±5  Withstand Pressure (MPa)  7  Heat Resistance Temperature (℃)  120 
    Rating:
    93%
    (220)
    from S$0.31
    Min. 2 days
  5. O-Ring G Series (for Static)
    NOK O-Ring G Series (for Static)
    An O-ring is an annular packing with an O-shaped (circular) cross section, which is generally mounted in a groove and compressed appropriately to be used as a seal for a wide variety of fluids such as oil, water, air, and gas.
    Type  For fixing G type  Material  NBR-70-1 (Type 1 A) NBR nitrile rubber  Hardness  70(±5)°  Heat Resistance Temperature (℃)  100  Material symbol  (JIS) Type 1A (NOK) A305 
    Rating:
    92%
    (99)
    from S$1.09
    Min. 2 days
  6. O-Ring AS568 (ARP568) (for Static, for Aircraft O-Ring Hydraulics) NBR
    NOK O-Ring AS568 (ARP568) (for Static, for Aircraft O-Ring Hydraulics) NBR
    It is widely used as a sealing material for various items, and has the best balance of performance and workability.
    Material  NBR (Nitrile Rubber)  Operating Temperature Range (℃)  -24～100(MAX120)  Hardness (Durometer A)  70±5  Material symbol  A305 
    Rating:
    95%
    (126)
    from S$0.29
    Min. 2 days
  7. O-Ring ISO Type
    NOK O-Ring ISO Type
    Rating:
    96%
    (67)
    from S$0.39
    Min. 2 days
  8. O-Ring P Series (Static, Dynamic)
    NOK O-Ring P Series (Static, Dynamic)
    It has the best heat resistance, oil resistance, and fuel oil resistance among synthetic rubber materials. * Weak against steam, ketones, esters, alkalis, and amines
    Rating:
    93%
    (105)
    from S$1.29
    Min. 2 days
  9. O-Ring G (for Static) NBR
    MASUOKA O-Ring G (for Static) NBR
    Good oil resistance, wear resistance, and aging resistance. Oil resistant products such as oil seals, gaskets, oil resistant hoses, conveyor belts, printing rolls, and spinning top rolls.
    Material  NBR (Nitrile Rubber)  Hardness  70  Withstand Pressure (MPa)  7  Heat Resistance Temperature (℃)  100 
    Rating:
    95%
    (43)
    from S$0.40
    Min. 2 days
  10. O-Ring Fluoro AS568 Type
    NOK O-Ring Fluoro AS568 Type
    Rating:
    98%
    (72)
    from S$0.91
    Min. 2 days
  11. O-Ring S Series (For Static) Fluorine
    NOK O-Ring S Series (For Static) Fluorine
    It has the best heat resistance, oil resistance, and fuel oil resistance among synthetic rubber materials.
    Material  JIS4 class D fluoro rubber  Color  Black  Type  For fixing S type  Operating Temperature Range (℃)  -15～200 (MAX220)  JIS Standard  JIS B 2401 Class 4 D  Hardness (Durometer A)  70(±5)  JASO standard  JASO F404 4 type D  Material symbol  F201 
    Rating:
    93%
    (91)
    from S$2.19
    Min. 2 days
  12. O-Ring G (For Static) Fluoro Rubber
    MASUOKA O-Ring G (For Static) Fluoro Rubber
    Has heat resistance and chemical resistance. Packing that requires heat resistance, oil resistance, and chemical resistance, corrosion resistant packing in chemical factories, gaskets, diaphragms, tank linings, hoses, pump parts, etc.
    Material  Fluororubber  Hardness  70  Withstand Pressure (MPa)  7  Heat Resistance Temperature (℃)  200 
    Rating:
    93%
    (36)
    from S$1.99
    Min. 2 days
  13. O-Ring P Series Red Silicone
    NOK O-Ring P Series Red Silicone
    In addition to heat resistance and cold resistance, it has excellent lubrication oil resistance and water resistance.
    Material  VMQ-70 (4 types C) silicone rubber  Color  Red  Operating Temperature Range (℃)  -48～200(MAX220)  Hardness (Durometer A)  70(±5)  Material symbol  S503 
    Rating:
    90%
    (65)
    from S$0.48
    Min. 2 days
  14. O-Ring S (For Static) Type 4 D Fluoro Rubber
    MASUOKA O-Ring S (For Static) Type 4 D Fluoro Rubber
    It has the highest heat resistance and chemical resistance. Packing that requires heat resistance, oil resistance, and chemical resistance, corrosion resistant packing in chemical factories, gaskets, diaphragms, tank linings, hoses, pump parts, etc.
    Specification  Heat, oil and chemical resistant  Type  For fixing S type  Material  Fluoro rubber  Hardness  70  Heat Resistance Temperature (℃)  220  RoHS directive (corresponding to 10 substances)  Correspondence 
    Rating:
    94%
    (76)
    from S$0.82
    Min. 2 days
  15. O-Ring G Series (For Static) Fluorine
    NOK O-Ring G Series (For Static) Fluorine
    It has the best heat resistance, oil resistance, and fuel oil resistance among synthetic rubber materials.
    Material  FKM-70 (4 types D) fluoro rubber  Color  Black  Type  For fixing G type  Operating Temperature Range (℃)  -15～200 (MAX220)  JIS Standard  JIS B 2401 Class 4 D  Hardness (Durometer A)  70(±5)  JASO standard  JASO F404 4 type D  Material symbol  F201 
    Rating:
    94%
    (31)
    from S$3.89
    Min. 2 days
  16. O-Ring AS568 Type
    NOK O-Ring AS568 Type
    Rating:
    91%
    (28)
    from S$0.34
    Min. 2 days
  17. O-Ring S Series Static (NBR)
    Musashi Oil Seal Mfg O-Ring S Series Static (NBR)
    Although the structure is simple, it has a good sealing performance due to its self-sealing action. Demonstrates stable sealing performance even at high pressure. The installation space is compact and easy to install. Since the seal has no directionality, it is possible to seal from both sides.
    Type  For fixing S type  Material  JIS Class 1 A NBR (Nitrile rubber)  Hardness  70(±5)  Heat Resistance Temperature (℃)  100 
    Rating:
    94%
    (40)
    from S$0.31
    Min. 2 days
  18. O-Ring 1A
    NOK O-Ring 1A
    It is widely used as a sealing material for various items, and has the best balance of performance and workability.
    Rating:
    94%
    (54)
    from S$0.31
    Min. 2 days
  19. O-Ring P (For Dynamic) 4 Types C Silicone Rubber
    MASUOKA O-Ring P (For Dynamic) 4 Types C Silicone Rubber
    It has a high degree of heat resistance and cold resistance. Good oil resistance. Heat and cold resistant applications such as packings, gaskets, oil seals, industrial rolls, anti-vibration rubber, and electrical insulation, medical applications, etc. Sealand, Botting (RTV)
    Type  For dynamic (P type)  Material  Silicone rubber  Heat Resistance Temperature (℃)  200  Hardness (Durometer A)  70(±5)  RoHS directive (corresponding to 10 substances)  Correspondence 
    Rating:
    94%
    (40)
    from S$0.31
    Min. 2 days
  20. O-Ring 1BP
    NOK O-Ring 1BP
    Type 1 B has almost the same properties as A305 (Type 1 A), and is harder than A305 and has excellent pressure resistance. Widely used as a sealing material for various items, it is a material with the best balance of performance and workability.
    Material  NBR-90 (Type 1 B) NBR nitrile rubber  Operating Temperature Range (℃)  -23～100(MAX120)  Hardness (Durometer A)  90±5  Material symbol  A105 
    Rating:
    94%
    (25)
    from S$0.26
    Min. 2 days
  21. O-Ring S (for Static) NBR
    MASUOKA O-Ring S (for Static) NBR
    Good oil resistance, wear resistance, and aging resistance. Oil resistant products such as oil seals, gaskets, oil resistant hoses, conveyor belts, printing rolls, and spinning top rolls.
    Type  For fixing S type  Material  NBR (Nitrile Rubber)  Hardness  70±5  Withstand Pressure (MPa)  7  Heat Resistance Temperature (℃)  120  RoHS directive (corresponding to 10 substances)  Correspondence 
    Rating:
    94%
    (32)
    from S$0.31
    Min. 2 days
  22. O-Ring Fluorine 4D
    NOK O-Ring Fluorine 4D
    It has the best heat resistance, oil resistance, and fuel oil resistance among synthetic rubber materials.
    Material  FKM (Fluoro rubber)  Type  For SS type fixing  Operating Temperature Range (℃)  -15～200(MAX220)  Wire Diameter Φ(mm)  1.0±0.07  Hardness (Durometer A)  70±5  Material symbol  F201 
    Rating:
    99%
    (44)
    from S$1.09
    Min. 2 days
  23. O-Ring JIS B 2401 P Series (For Dynamic, Static) NBR
    Akitsu O-Ring JIS B 2401 P Series (For Dynamic, Static) NBR
    A synthetic rubber O-ring made for the purpose of sealing a wide variety of fluids such as air and gas as well as oil and water liquids, and exerts a sealing function by utilizing the stress generated by appropriate compression. .. Seals for general industrial equipment.
    Specification  Oil and water resistant  Material  JIS class A NBR (nitrile rubber)  Standard  JIS B 2401  Operating Temperature Range  0～80℃ 
    Rating:
    86%
    (10)
    from S$6.19
    Min. 2 days
  24. O-Ring G Series Red Silicone
    NOK O-Ring G Series Red Silicone
    In addition to heat resistance and cold resistance, it has excellent lubrication oil resistance and water resistance.
    Material  VMQ-70 (JIS class 4 C) silicone rubber  Color  Red  Type  For fixing G type  Operating Temperature Range (℃)  -48～200(MAX220)  JIS Standard  JIS B 2401 4 class C  Hardness (Durometer A)  70(±5)  Material symbol  S503 
    Rating:
    85%
    (22)
    from S$1.09
    Min. 2 days
  25. O-ring P Series Exercise (NBR)
    Musashi Oil Seal Mfg O-ring P Series Exercise (NBR)
    Although the structure is simple, it has a good sealing performance due to its self-sealing action. Demonstrates stable sealing performance even at high pressure. The installation space is compact and easy to install. Since the seal has no directionality, it is possible to seal from both sides.
    Type  For dynamic (P type)  Material  JIS Class 1 A NBR (Nitrile rubber)  Hardness  70(±5)  Heat Resistance Temperature (℃)  100 
    Rating:
    92%
    (19)
    from S$0.29
    Min. 2 days
  26. O-Ring G Series (for Static) Class 1 B NBR
    NOK O-Ring G Series (for Static) Class 1 B NBR
    It is widely used as a sealing material for various items, and has the best balance of performance and workability.
    Rating:
    99%
    (17)
    from S$0.46
    Min. 2 days
  27. Silicone O-Ring
    AS ONE Silicone O-Ring
    Material  Silicon rubber  Operating Temperature Range (℃)  -60～+250 
    Rating:
    96%
    (10)
    from S$2.79
    Min. 2 days
  28. O-Ring P Series for Moving (Red Silicone)
    Musashi Oil Seal Mfg O-Ring P Series for Moving (Red Silicone)
    Although the structure is simple, it has a good sealing performance due to its self-sealing action. Demonstrates stable sealing performance even at high pressure. The installation space is compact and easy to install. Since the seal has no directionality, it is possible to seal from both sides.
    Type  For dynamic (P type)  Material  JIS Class 4 C (silicon rubber)  Hardness  70(±5)  Heat Resistance Temperature (℃)  200 
    Rating:
    89%
    (18)
    from S$0.28
    Min. 2 days
  29. O-ring P series (for exercise, for fixing) NBR
    ESCO O-ring P series (for exercise, for fixing) NBR
    Oil resistant
    Specification  Oil resistant  Material  Nitrile rubber (Type 1)  Heat Resistance Temperature (℃)  150 
    Rating:
    89%
    (20)
    from S$1.29
    Min. 2 days
  30. O-Ring V (For Vacuum Flange) Fluoro Rubber
    MASUOKA O-Ring V (For Vacuum Flange) Fluoro Rubber
    Has heat resistance and chemical resistance. Packing that requires heat resistance, oil resistance, and chemical resistance, corrosion resistant packing in chemical factories, gaskets, diaphragms, tank linings, hoses, pump parts, etc.
    Specification  Heat and chemical resistant  Type  For V type vacuum flange  Material  Fluororubber  Hardness  70  Withstand Pressure (MPa)  7  Heat Resistance Temperature (℃)  200  RoHS directive (corresponding to 10 substances)  Correspondence 
    Rating:
    84%
    (5)
    from S$2.69
    Min. 2 days
  31. O-Ring Iron Rubber P Series (For Static, For Dynamic)
    NOK O-Ring Iron Rubber P Series (For Static, For Dynamic)
    Iron rubber is an elastic molding material that fills the intermediate area between rubber and plastic. It has excellent elasticity recovery, impact resilience, rubber elasticity from high temperature to low temperature, wear resistance, and mechanical strength.
    Material  AU (urethane rubber)  Type  For fixing P type, for exercise  Operating Temperature Range (℃)  -35～80(MAX100)  Hardness (Durometer A)  93±5  Material symbol  U801 
    Rating:
    98%
    (8)
    from S$1.59
    Min. 2 days
  32. O-Ring JIS B 2401 G Series for Fixing (NBR)
    Morisei Kako O-Ring JIS B 2401 G Series for Fixing (NBR)
    It is a material that has excellent oil resistance and wear resistance, and has stable heat resistance. Seals in all industries such as automobiles and hydraulic / pneumatic pressure.
    Type  For fixing G type  Material  JIS class A NBR (nitrile rubber)  Standard  JIS B 2401  Hardness  70(±5)°  Operating Temperature Range  -30～100℃ 
    Rating:
    92%
    (12)
    from S$1.29
    Min. 2 days
  33. O-ring
    Morisei Kako O-ring
    It has the best oil resistance and heat resistance and can be used in a wide range. (Weak against steam, ketones, esters, alkalis and amines) Seals in all industries such as automobiles and hydraulic / pneumatic pressure.
    Specification  Oil and heat resistant  Material  Fluororubber  Standard  JIS B 2401  Operating Temperature Range  -15～200℃ 
    Rating:
    93%
    (9)
    from S$8.19
    Min. 2 days
  34. Mini Y packing NBR
    MASUOKA Mini Y packing NBR
    Packing seals for lots, pistons, and cylinder packing for hydraulic and pneumatic pressure. It is a hook type and fits into the O-ring ground dimensions, does not require accuracy, and does not leak. Packing with extremely low starting, friction and resistance.
    Material  NBR  RoHS directive (corresponding to 10 substances)  Correspondence 
    Rating:
    93%
    (11)
    from S$0.43
    Min. 2 days
  35. O-Ring V (For Vacuum Flange) NBR
    MASUOKA O-Ring V (For Vacuum Flange) NBR
    Good oil resistance, wear resistance, and aging resistance. Oil resistant products such as oil seals, gaskets, oil resistant hoses, conveyor belts, printing rolls, and spinning top rolls.
    Material  NBR (Nitrile Rubber)  Hardness  70  Withstand Pressure (MPa)  7  Heat Resistance Temperature (℃)  100 
    Rating:
    98%
    (9)
    from S$0.46
    Min. 2 days
  36. O-Ring P Series Static, Dynamic (Fluorine)
    Musashi Oil Seal Mfg O-Ring P Series Static, Dynamic (Fluorine)
    Although the structure is simple, it has a good sealing performance due to its self-sealing action. Demonstrates stable sealing performance even at high pressure. The installation space is compact and easy to install. Since the seal has no directionality, it is possible to seal from both sides.
    Material  JIS Class 4 D (Fuso Rubber)  Hardness  70(±5)  Heat Resistance Temperature (℃)  200 
    Rating:
    94%
    (19)
    from S$0.34
    Min. 2 days
  37. O-Ring P Standard (FKM)
    Morisei Kako O-Ring P Standard (FKM)
    It has the best oil resistance and heat resistance and can be used in a wide range (weak against steam, ketones, esters, alkalis and amines). The wire diameter is thick and suitable for exercise. Sealing material in all industries such as automobiles and hydraulic / pneumatic pressure.
    Specification  Oil and heat resistant  Type  P standard  Material  JIS4 class D Fluoro rubber (FKM)  Standard  JIS B 2401  Operating Temperature Range  -15～220℃ 
    Rating:
    100%
    (1)
    from S$2.39
    Min. 2 days
  38. O-ring JIS OR type
    NOK O-ring JIS OR type
    Type  OR 
    Rating:
    80%
    (4)
    from S$0.22
    Min. 2 days
  39. O-Ring P Standard (NBR)
    Morisei Kako O-Ring P Standard (NBR)
    Type  P standard  Material  NBR-70-1 (Class 1 A) 
    Rating:
    92%
    (5)
    from S$0.12
    Min. 2 days
  40. Φ3-22mm O-ring set
    ESCO Φ3-22mm O-ring set
    * It is not gasoline resistant.
    Material  Rubber 
    Rating:
    76%
    (11)
    from S$25.99
    Min. 2 days
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