A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5990-01-632-0969
NSN 5855-01-286-9928
NSN 6135-00-276-7625
NSN 6150-01-366-2945
NSN 5985-01-360-9051
NSN 6220-00-369-5422
NSN 5855-01-632-9266
NSN 2925-00-833-9466
NSN 6650-01-267-6142
NSN 6685-01-552-6578
NSN 5915-00-377-9183
NSN 5915-01-234-2371