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 6320-01-318-6518
NSN 5925-00-290-4451
NSN 5975-01-625-1770
NSN 5920-00-933-5439
NSN 5835-01-498-9410
NSN 5895-01-333-4378
NSN 5905-01-507-4425
NSN 6645-01-076-4655
NSN 5925-01-050-8410
NSN 6110-01-057-6445
NSN 5990-00-827-0684
NSN 6685-01-055-7384