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 5960-01-614-8005
NSN 5925-01-448-9590
NSN 6105-01-649-0377
NSN 5999-00-473-2706
NSN 6620-00-724-1263
NSN 6135-01-108-6057
NSN 5950-01-170-4174
NSN 5985-00-882-2510
NSN 5925-00-076-0120
NSN 6220-01-548-8326
NSN 6240-01-326-5308
NSN 5855-01-331-8502