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 5990-01-025-7466
NSN 5920-00-184-2100
NSN 6240-01-053-8462
NSN 6650-01-307-3108
NSN 5960-01-409-1917
NSN 5915-01-211-9920
NSN 5965-01-218-5003
NSN 6150-01-644-2441
NSN 6105-00-992-3672
NSN 2925-01-554-5246
NSN 6240-01-536-3604
NSN 6220-01-104-5075