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 2925-00-441-8252
NSN 6685-01-516-0944
NSN 5996-00-270-0340
NSN 2925-01-127-0167
NSN 5975-01-498-0624
NSN 6220-00-722-4497
NSN 6320-00-228-5678
NSN 6610-01-561-9971
NSN 5910-01-159-2586
NSN 5925-01-222-1636
NSN 5935-00-598-6126
NSN 6145-01-013-1525