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 6620-00-557-5559
NSN 5935-01-653-4544
NSN 6220-00-516-9270
NSN 5999-00-103-1066
NSN 5895-01-439-3334
NSN 5950-00-216-7548
NSN 6130-01-234-4549
NSN 6645-00-421-5287
NSN 5960-00-963-1285
NSN 5965-00-196-7320
NSN 5895-01-195-6446
NSN 2925-00-060-8292