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 6150-01-123-7612
NSN 5915-01-026-1009
NSN 6320-01-202-8761
NSN 6645-00-910-2722
NSN 6150-00-147-8223
NSN 5990-01-142-0538
NSN 6145-00-826-9574
NSN 5925-00-499-9220
NSN 2925-00-684-7708
NSN 6645-01-372-6012
NSN 5965-00-802-6683
NSN 6145-01-258-9201