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 6620-00-473-3692
NSN 5985-01-048-2849
NSN 6685-00-684-7891
NSN 6620-00-197-5130
NSN 5835-01-512-4834
NSN 6220-00-846-3586
NSN 6645-00-702-4386
NSN 6620-01-024-7003
NSN 5925-01-643-5706
NSN 6145-01-013-7171
NSN 5895-00-720-4148
NSN 5930-01-475-4206