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 6685-00-578-5951
NSN 5965-01-474-5654
NSN 5920-01-134-5033
NSN 5935-00-045-6397
NSN 6145-01-593-7687
NSN 5915-00-948-9161
NSN 5985-00-862-3291
NSN 5975-01-268-0061
NSN 5925-01-573-5638
NSN 6150-01-147-4604
NSN 5996-01-322-7140
NSN 6620-00-684-6771