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 6645-00-148-8081
NSN 5965-01-224-9756
NSN 5925-00-553-9899
NSN 6145-01-302-9276
NSN 5960-00-195-6435
NSN 6645-01-613-2053
NSN 5999-01-448-4898
NSN 5910-01-394-3729
NSN 6145-01-363-5393
NSN 5925-00-482-2396
NSN 6685-00-279-3620
NSN 5905-00-044-3188