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 6150-01-227-5650
NSN 6135-00-025-6382
NSN 6220-00-223-7445
NSN 5935-01-082-6187
NSN 5930-01-371-9691
NSN 6130-01-167-8036
NSN 6150-00-981-6732
NSN 5990-00-277-3763
NSN 7035-01-380-6538
NSN 5975-01-433-3938
NSN 6130-01-115-7731
NSN 2925-00-132-1280