O-Rings, O-Ring Kits, Mil Spec Viton Orings and More
Standard, metric and
custom o-rings are offered from a complete range of commercial and mil-spec elastomers.
Buna and Teflon® back-up rings. PTFE (Teflon) backups are available as
solid, split and spiral backup rings.
Standard o-ring dimensions with four sealing surfaces available in
Buna and Viton.
Standard o-ring dimensions with a square cross section configuration.
Commonly available in Buna material.
Spliced and vulcanized custom size o-rings to nearly any dimension.
Just specify cross section and ID.
Standard and metric cross sections in buna and viton o-ring cord stock. Silicone o-ring cord and other materials are also available in inch sizes.
Oring Kits provide a convenient assortment of common sizes. Standard o-ring kits, metric o-ring kits, splicing kits, quad kits and more. Click the Link for more info.
Available here is a PDF format o-ring sizing chart showing o-ring dimensions for standard size o-rings. It is grouped by cross section and sorted by inside diameter.
Lubricants are often used in o-ring assembly to prevent damage, to help seat the o-ring and can offer protection as a surface film. Parker offers a standard o-lube as well as a super o-lube. Click the o-ring lubricant link above for more info.
Standard O-Ring Compounds
- Buna (Nitrile)
- Fluorocarbon (Viton®)
- Highly Saturated Nitrile (HNBR)
- Neoprene Sponge
- PTFE (Teflon®)
- Teflon Encapsulated Silicone
- Teflon Encapsulated Viton
- Viton O-Ring
Common Mil Spec Compounds
AMS7276 O-Ring (AMS 7276, AS3208, AS3209), M83248/1,
75-Duro Black Fluorocarbon O-Ring
AMS7259 (AS3581), M83248/2
90 Duro Black Fluorocarbon O-Ring
75 Duro Black Fluorocarbon O-Ring
GLT® Type Viton O-Ring
AMS-R-25988 CL 1 GR 70 (M25988/1):
AMS7267, AMS3304 (AS9385, AS9386, AS3582):
70 Duro Red Silicone O-Ring
Mil-P-25732C (MS28775): Nitrile