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 6135-00-738-5571
NSN 6610-01-442-3509
NSN 6650-01-349-0306
NSN 6620-00-816-9755
NSN 5935-01-364-4741
NSN 5975-00-312-1410
NSN 2925-01-384-4139
NSN 7035-00-541-8516
NSN 5855-01-423-0817
NSN 4140-01-415-6013
NSN 5925-01-300-7352
NSN 5990-01-411-5930