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 5999-01-556-7931
NSN 6645-01-009-7678
NSN 5945-01-218-5645
NSN 5990-00-644-3365
NSN 6105-01-333-7403
NSN 5990-00-332-1735
NSN 2925-01-643-4472
NSN 5925-01-053-6519
NSN 5960-01-423-1085
NSN 5835-01-249-7393
NSN 6620-01-542-5569
NSN 5950-00-375-0855