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 5965-01-011-9437
NSN 5950-00-119-1611
NSN 5975-00-782-6389
NSN 6240-00-256-6410
NSN 5925-01-566-5577
NSN 6150-01-140-5999
NSN 6645-00-153-3834
NSN 5945-01-408-5522
NSN 6320-00-115-0883
NSN 6135-01-156-4627
NSN 6685-01-533-3448
NSN 5855-00-962-5792