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 5950-01-399-8700
NSN 4140-00-859-2412
NSN 5950-01-294-8698
NSN 6240-01-026-0032
NSN 6610-01-202-1373
NSN 6150-01-423-0505
NSN 6685-01-145-3938
NSN 6105-01-170-5420
NSN 6135-00-985-7845
NSN 5935-00-766-8080
NSN 5950-01-411-5085
NSN 6685-01-288-8244