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 5905-01-445-5514
NSN 5915-01-192-9000
NSN 6610-00-956-4464
NSN 5925-00-476-6337
NSN 5925-01-514-0274
NSN 4140-00-230-4252
NSN 6110-01-477-6120
NSN 5855-00-237-4088
NSN 6130-01-177-7498
NSN 5965-01-392-0049
NSN 6150-00-623-7229
NSN 6645-01-016-1306