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 5996-01-243-4072
NSN 5945-01-357-9413
NSN 5975-01-131-2239
NSN 5925-00-913-8026
NSN 5915-00-686-6687
NSN 6240-00-792-5469
NSN 6645-01-354-7624
NSN 2925-00-275-1807
NSN 6685-00-581-8868
NSN 5925-01-492-4782
NSN 7035-00-003-7518
NSN 6135-01-386-5709