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 5930-00-155-5917
NSN 5905-00-151-6653
NSN 5945-00-275-0557
NSN 6135-01-045-1504
NSN 6620-01-127-0049
NSN 5905-01-481-3568
NSN 5950-01-401-5321
NSN 6220-00-419-0635
NSN 5925-01-441-9316
NSN 5910-00-276-8592
NSN 5960-01-442-7950
NSN 6110-01-423-8880