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 5998-01-228-7379
NSN 5935-01-400-1127
NSN 5910-01-396-8768
NSN 6650-00-567-8551
NSN 2925-00-444-1186
NSN 5855-00-548-4742
NSN 4140-01-227-4674
NSN 5915-00-387-2076
NSN 5905-01-341-6436
NSN 6620-01-132-1776
NSN 5910-01-026-6915
NSN 6220-01-180-6997