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 5905-01-004-8792
NSN 6610-01-616-2877
NSN 4140-01-170-5395
NSN 5925-01-211-7745
NSN 2925-01-253-6006
NSN 6145-00-952-1815
NSN 5910-00-935-3517
NSN 6620-01-397-4131
NSN 5985-00-361-8863
NSN 6610-01-207-0045
NSN 5999-01-617-9270
NSN 6320-01-096-6649