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 6145-01-364-0346
NSN 6135-01-438-0228
NSN 6145-01-561-7690
NSN 5935-00-306-0987
NSN 6320-01-072-2073
NSN 5935-01-205-7371
NSN 6645-00-583-0066
NSN 4140-01-413-4803
NSN 5905-01-231-1871
NSN 6240-01-304-0129
NSN 5855-00-631-4565
NSN 5996-01-264-0291