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 6685-00-475-2710
NSN 6610-00-921-1066
NSN 6320-01-643-0850
NSN 5935-01-463-8014
NSN 5915-01-195-2327
NSN 5935-01-472-7866
NSN 2925-01-063-7876
NSN 5996-01-167-9234
NSN 6650-01-287-0096
NSN 5975-01-441-0496
NSN 5915-01-032-4892
NSN 6130-00-681-1496