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 6240-01-322-4887
NSN 6685-01-542-5365
NSN 5925-01-429-7699
NSN 5835-01-088-1787
NSN 5855-00-337-3679
NSN 5999-01-291-9170
NSN 6145-00-669-6795
NSN 6645-01-296-0882
NSN 6645-01-519-2732
NSN 5915-00-733-5893
NSN 5985-00-879-8730
NSN 5990-01-476-9956