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 5905-01-640-9667
NSN 5905-01-542-9474
NSN 5996-01-609-8502
NSN 5965-00-249-6980
NSN 6240-00-422-1278
NSN 6320-01-209-0952
NSN 6130-01-399-7845
NSN 6645-01-462-2101
NSN 6220-01-567-6956
NSN 6685-00-352-5595
NSN 6135-01-136-8306
NSN 5996-01-451-0356