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 5965-01-154-6319
NSN 6650-01-534-3587
NSN 2925-00-996-2167
NSN 6135-01-163-0332
NSN 5920-00-501-7834
NSN 6610-01-387-5630
NSN 5925-01-195-2013
NSN 6610-01-202-0371
NSN 6685-01-580-0669
NSN 5855-00-688-9954
NSN 5998-01-157-1641
NSN 6130-01-106-8942