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 6130-01-495-8557
NSN 5895-00-253-0799
NSN 6220-01-536-9778
NSN 5935-00-617-8511
NSN 6145-00-862-7069
NSN 5985-01-546-8100
NSN 5915-01-145-5340
NSN 6135-00-299-6918
NSN 5905-00-959-5781
NSN 5925-00-387-3956
NSN 6130-01-146-4221
NSN 5930-01-446-3396