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O-ring Sizes:

Custom Width (W) or 'Thickness':

Custom Inside Diameter (ID):

Custom Outside Diameter (OD):

O-ring Materials:

Hardness Rating (Shore A Scale):

O-ring Features:

Help with O-rings specifications:

O-ring Sizes
   O-ring Sizes:       
   Your choices are...         
   "AS568" standard sizes (001-475)       O-ring desired is a 3-digit AS568 Standard Size Dash # (AS568A(or B) -001 to AS568A (or B) -475) 
   "AS568-" boss gasket sizes (901- and up)       O-ring is a 3-digit AS568 Standard for straight thread tube fittings (AS568A (or B) -901 and higher). 
   British Standard metric sizes       "BS" part numbers are British Standard Metric O-rings, per BS 1806. 
   JIS standard sizes       "G," "P," "S" and "V" part numbers are Japanese Industrial Standard (JIS) Metric O-Rings. 
   JASO standard sizes       JASO: Japanese Automobile Standard 
   AS871       Slightly tighter standard size than AS568. 
   Custom       Matching parts will include minimum and maximum sizes available for custom O-rings. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Custom Width (W) or 'Thickness':       Enter in desired custom width for non-standard O-ring. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Custom Inside Diameter (ID):       Enter in desired inside diameter of non-standard O-ring. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Custom Outside Diameter (OD):       Enter in desired outside diameter of non-standard O-ring. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
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O-ring Materials
   O-ring Materials:      The descriptions of the materials and their characteristics to follow are typical. Exact specifications should be clarified by the vendor, as chemical and physical properties of an O-ring can differ based on manufacturing technique.
   Your choices are...         
   AFLASTM       Highly fluorinated, carbon backboned polymers used in applications to resist harsh chemical and ozone attack with a good thermal stability.  AFLASTM offers low compression set and excellent aging characteristics.  Typical temperature ranges for AFLASTM o-rings is 25° F to 450° F.  Consult manufacturer, as exact temperature ranges may vary. 
   Butyl       Butyl is a common term used for the isobutylene isoprene elastomer. It is known for its excellent resistance to water, steam, alkalis, and oxygenated solvents. It has low gas permeation and is capable of providing high energy absorption (dampening) and good hot tear strength. Typical temperature ranges for butyl o-rings is -65 F° to 450° F. Consult manufacturer, as exact temperature ranges may vary. 
   Cast Polyurethane       Polyurethane elastomers, as a class, have excellent wear resistance, high tensile strength and high elasticity in comparison with any other elastomers. Permeability is good and comparable with butyl. Typical temperature ranges for cast polyurethane o-rings is -60° F to 225° F. Consult manufacturer, as exact temperature ranges may vary. 
   EPDM (Ethylene Propylene)       Good resistance to sunlight, weathering and ozone. It has poor resistance to petroleum oils and fuel. Good heat and compression set resistance. Typical temperature ranges for EPDM o-rings is -65° F to 300° F. Consult manufacturer, as exact temperature ranges may vary. 
   Fluorosilicone       The mechanical and physical properties are very similar to silicone. However, fluorosilicone offers improved fuel and mineral-oil resistance but poor hot-air resistance when compared with silicone. Typical temperature ranges for fluorosilicone o-rings is -80 F° to 350° F. Consult manufacturer, as exact temperature ranges may vary. 
   Fluorocarbon/Fluorosilicone Blend       Fluorocarbon / fluorosilicone (FKM/FVMQ) is a propreitary blend of materials; consult supplier for properties. Typical temperature ranges for FKM/FVMQ o-rings is -25 F° to 400° F. Consult manufacturer, as exact temperature ranges may vary. 
   HSN (Highly-Saturated Nitrile)       Highly saturated nitrile (HSN) has good mechanical properties when compared with other elastomers and high wear resistance. Nitrile is not resistant to weathering and ozone. Typical temperature ranges for HSN o-rings is -40 F° to 300° F. Consult manufacturer, as exact temperature ranges may vary. 
   Hydrin®       Good gas impermeability and maintains physical properties over a wide temperature while maintaining excellent resistance to petroleum oils. Ozone, oxidation, weathering, and sunlight resistances are other qualities. Typical temperature ranges for Hydrin® o-rings is -65 F° to 450° F. Consult manufacturer, as exact temperature ranges may vary. 
   Hypalon®       Hypalon® provides excellent ozone, oxidation, sunlight (color degradation), and weather resistance. They are also capable of providing excellent resistance to alkalis and acids. Typical temperature ranges for Hypalon® o-rings is -60 F° to 300° F. Consult manufacturer, as exact temperature ranges may vary. 
   Kalrez®       High temperature and chemical resistance. Low compression set. Retains its elasticity and recovery properties better than other high temperature elastomers. Typical temperature ranges for Kalrez® o-rings is -40 F° to 600° F. Consult manufacturer, as exact temperature ranges may vary. 
   Neoprene (Chloroprene)       The first synthetic rubber and exhibits generally good ozone, aging and chemical resistance. It has good mechanical properties over a wide temperature range. Typical temperature ranges for neoprene o-rings is -45 F° to 250° F. Consult manufacturer, as exact temperature ranges may vary. 
   Nitrile (Buna-N)       Good resistance to petroleum hydrocarbons and fuels. Widely used with most oils, hydraulic fluids, and alcohol. Many compound variations for specific applications, the higher the acrylonitrile content, the better the resistance to oil and fuel. Typical temperature ranges for nitrile o-rings is -30 F° to 250° F. Consult manufacturer, as exact temperature ranges may vary. 
   Polyacrylate       Polyacrylate elastomers have good compatibility with higher temperatures. They are well suited for use with extreme pressure (EP) lubricants and have higher resistance to oxidation and ozone. Polyacrylates are not recommended for dry running applications. Typical temperature ranges for polyacrylate o-rings is -25 F° to 350° F. Consult manufacturer, as exact temperature ranges may vary. 
   Polyurethane (Millable)       Millable urethanes exhibit better resistance to hydraulic fluids than cast urethanes. Polyurethane elastomers, as a class, have excellent wear resistance, high tensile strength and high elasticity in comparison with any other elastomers. Permeability is good and comparable with butyl. Typical temperature ranges for millable polyurethane o-rings is -40 F° to 180° F. Consult manufacturer, as exact temperature ranges may vary. 
   SBR (BUNA-S)       Good resistance to petroleum hydrocarbons and fuels. Widely used with most oils, hydraulic fluids, alcohol. Many compound variations for specific applications. Typical temperature ranges for SBR o-rings is -30 F° to 275° F. Consult manufacturer, as exact temperature ranges may vary. 
   Silicone       Silicone has a broad temperature range and is generally Odorless / non-toxic. High resistance to sun and ozone and fungus. However it has poor tear and abrasion strength and poor resistance to oils. Typical temperature ranges for silicone o-rings is -65 F° to 450° F. Consult manufacturer, as exact temperature ranges may vary. 
   Teflon®       Has an excellent temperature range with various chemical and fuel resistances. It has a low coefficient of friction and is non-elastic. Typical temperature ranges for Teflon® o-rings is -10 F° to 450° F. Consult manufacturer, as exact temperature ranges may vary. 
   Teflon®-encapsulated Nitrile       Teflon®-encapsulated O-rings combine the best qualities of Teflon® on the outside with its chemical inertness and an elastomer on the inside for resilience, to form a seal. Typical temperature ranges for Teflon®-encapsulated nitrile o-rings is -30 F° to 250° F. Consult manufacturer, as exact temperature ranges may vary. 
   Teflon®-encapsulated Silicone       Teflon®-encapsulated O-rings combine the best qualities of Teflon® on the outside with its chemical inertness and an elastomer on the inside for resilience, to form a seal. Typical temperature ranges for Teflon®-encapsulatee silicone o-rings is -80 F° to 450° F. Consult manufacturer, as exact temperature ranges may vary. 
   Teflon®-encapsulated Viton®       Teflon®-encapsulated o-rings combine the best qualities of Teflon® on the outside with its chemical inertness and an elastomer on the inside for resilience, to form a seal. Typical temperature ranges for Teflon®-encapsulated Viton® o-rings is -10 F° to 300° F. Consult manufacturer, as exact temperature ranges may vary. 
   Thiokol®       A flexible and highly durable elastic rubber product with outstanding oil and chemical-resistance, weather-proofing, and airtight and watertight properties. Typical temperature ranges for Thiokol® o-rings is -30 F° to 300° F. Consult manufacturer, as exact temperature ranges may vary. 
   Vamac®       Vamac® compounds provide excellent high heat aging resistance to while providing good physical properties. Also has a high degree of oil, ozone, UV, and weather resistance along with good low temperature flexibility. Typical temperature ranges for Vamac® o-rings is -20 F° to 300° F. Consult manufacturer,, as exact temperature ranges may vary. 
   Viton® (Fluorocarbon)       Excellent high temperature and chemical resistance and mechanical and physical properties. Low compression set and low gas permeability. Typical temperature ranges for Viton® o-rings is -20 F° to 400° F. Consult manufacturer, as exact temperature ranges may vary. 
   Other       Select this if you are seeking a specific material not listed above. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Hardness Rating (Shore A Scale)
   Hardness Rating (Shore A Scale)       
   Your choices are...         
   <30 durometer         
   30 durometer         
   35 durometer         
   40 durometer         
   45 durometer         
   50 durometer         
   55 durometer         
   60 durometer         
   65 durometer         
   70 durometer         
   75 durometer         
   80 durometer         
   85 durometer         
   90 durometer         
   >90 durometer         
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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O-ring Features
           
   Your choices are...         
   FDA Approved or 3A Sanitary Classification       O-ring has been approved for medical or food processing applications. 
   AMS/MIL Spec         
   Peroxide Cured       Typically utilized in medical equipment. 
   Chlorinated       Chemically inert material with excellent film forming properties. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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