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 6110-01-273-1254
NSN 6130-01-074-4202
NSN 6135-00-900-2139
NSN 5925-01-006-3311
NSN 5965-01-567-1087
NSN 5990-01-573-1634
NSN 5965-01-265-6814
NSN 5996-00-869-0059
NSN 6685-01-373-3489
NSN 6220-01-137-8187
NSN 6610-01-252-8201
NSN 5905-00-753-0299