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 6110-00-269-2696
NSN 5855-01-660-5088
NSN 6110-01-103-8284
NSN 6135-01-204-8712
NSN 5915-01-009-4160
NSN 5895-01-445-6946
NSN 6320-01-383-9979
NSN 5930-00-715-1131
NSN 6620-01-064-0366
NSN 6135-00-235-1938
NSN 5925-01-089-9791
NSN 5835-01-380-5943