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 6320-00-500-4172
NSN 6610-00-061-7882
NSN 5915-01-371-1450
NSN 6150-01-357-6122
NSN 2925-01-209-9245
NSN 6130-01-606-4541
NSN 4140-01-209-1980
NSN 5910-01-630-2693
NSN 5998-01-333-8044
NSN 6610-00-466-3104
NSN 6650-01-019-1550
NSN 5999-00-721-4116