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 6610-01-101-5909
NSN 5905-00-299-4987
NSN 6645-01-160-4256
NSN 5996-01-606-2421
NSN 6135-01-355-8917
NSN 5925-01-325-1989
NSN 5998-00-018-0805
NSN 5990-01-146-9126
NSN 5925-00-081-9135
NSN 5950-01-386-4442
NSN 5985-01-158-5645
NSN 6220-01-121-4499