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 6320-01-072-2073
NSN 5855-01-254-3041
NSN 5975-01-583-7485
NSN 6220-01-446-6430
NSN 6110-00-051-1341
NSN 6650-01-288-6792
NSN 6685-01-311-0385
NSN 6145-00-301-9124
NSN 5905-01-555-8077
NSN 5950-01-215-4712
NSN 5975-01-170-8956
NSN 6110-01-586-8161