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 6105-01-431-6723
NSN 6610-00-446-2880
NSN 6645-00-137-1167
NSN 5925-01-609-5751
NSN 5950-01-522-9609
NSN 5925-00-636-5683
NSN 5855-01-634-0259
NSN 5999-00-130-1635
NSN 5915-01-146-2058
NSN 5985-01-620-2991
NSN 5930-01-088-8375
NSN 5935-00-227-1110