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 5925-01-452-9132
NSN 7035-01-503-5517
NSN 6135-01-263-3611
NSN 5935-01-161-8160
NSN 6135-01-412-0404
NSN 4140-00-227-8228
NSN 5855-00-337-3679
NSN 6240-00-764-1580
NSN 6650-00-862-7143
NSN 5910-01-110-2719
NSN 6685-01-209-3257
NSN 6220-00-383-7354