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 5910-00-683-3982
NSN 5895-00-525-3295
NSN 5855-00-762-4833
NSN 5945-01-453-8873
NSN 6620-01-302-3549
NSN 5999-01-501-9023
NSN 5895-01-441-2775
NSN 5945-00-596-2665
NSN 6145-01-179-9854
NSN 5910-01-366-5042
NSN 5925-01-367-0223
NSN 5998-00-448-5910