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 5915-00-156-7877
NSN 6645-01-437-5290
NSN 5996-00-243-6962
NSN 5998-01-113-7120
NSN 5835-00-481-9744
NSN 5910-00-481-1542
NSN 2925-01-025-0082
NSN 5990-00-394-3987
NSN 5925-01-519-3969
NSN 5895-00-252-8431
NSN 5945-01-071-0194
NSN 5910-01-275-0741