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 5999-01-386-6288
NSN 5855-01-167-2162
NSN 5950-01-061-3357
NSN 6130-01-231-6389
NSN 6685-01-006-6189
NSN 6220-00-446-8942
NSN 5990-00-754-5253
NSN 5950-01-435-8333
NSN 5998-01-525-2206
NSN 6135-01-426-8282
NSN 5945-00-031-1494
NSN 5996-00-525-1777