SEALING PRODUCTS / O-RINGS
PROSEALS USA is your one-stop shop for O-Rings.
PROSEALS USA works with leading OEM manufacturers to develop compounds and help design O-Ring glands as well as advise on material compatibility. Using our knowledge of materials we can develop custom compounds for critical applications.
The O-Ring is a very common seal and can be made of an elastomer, PTFE, or a solid or hollowed metal. O-Rings are primarily used for sealing and are put into a Gland that is cut into metal or other solid materials. The O-Ring and the gland make up the typical O-Ring assembly. PROSEALS USA carries a large inventory of AS568 standard sizes as well as metric and Mil Spec O-Rings. We are authorized distributors for Precix, Trelleborg, and Parco.
View O-Ring Catalog and Sizing Chart
Advantages of O-Rings:
- O-Rings are very cost effective.
- They seal over a wide range of temperature, pressure, and tolerances.
- No critical torque on tightening preventing structural damage.
- Light weight and require little space.
- Where differing amounts of compression affect seal function with flat gaskets, an o-ring is not affected as the metal to metal contact is generally allowed for.
Operating temperature: –30 to +250 °F
70 durometer; 90 durometer;
FDA 70 durometer; NSF 70 durometer, Metric Sizes
Operating temperature: –15 to +400 °F
black 75 durometer, black 90 durometer
brown 75 durometer, Metric Sizes
Ethylene Propylene (EPDM)
Operating temperature: –60 to +250 °F
EPDM, EPDM/FDA and EPDM/FDA/NSF 61 in 70 durometer
Operating temperature: –65 to +400 °F
Operating temperature: –40 to +225 °F
Hydrogenated Nitrile (HNBR)
Operating temperature: –25 to +300 °F
green 70 durometer
Teflon® Encapsulated Silicone
Operating temperature: –75 to +400 °F
O-Rings with Silicone core
Teflon® Encapsulated Viton®
Operating temperature: –15 to +280 °F
O-Rings with Viton® core
Operating temperature: –300 to +500 °F
55 durometer, Shore D, Virgin PTFE
PROSEALS USA can offer a conductive FKM that has very low permeation in Flex Fuels and a strong ability to dissipate static charge.
PROSEALS USA developed a EPDM compound for use in sanitary applications that meets all of the following standards: NSF/ANSI STANDARD 61, KTW, WRAS, and DVGW.