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 6220-01-025-6140
NSN 5920-01-022-5083
NSN 6110-00-443-9624
NSN 6320-01-384-3850
NSN 5905-01-220-5938
NSN 6645-00-300-0401
NSN 5855-01-213-9076
NSN 6145-01-113-8205
NSN 6105-01-330-4601
NSN 4140-01-365-6769
NSN 6135-00-756-6149
NSN 5930-01-203-5965