MIL-DTL-5521C, DETAIL SPECIFICATION: WASHER, AIRCRAFT HYDRAULIC PACKING BACK-UP (06-JUN-2007) [SUPERSEDING MIL-W-5521B]

MIL-DTL-5521C, DETAIL SPECIFICATION: WASHER, AIRCRAFT HYDRAULIC PACKING BACK-UP (06-JUN-2007) [SUPERSEDING MIL-W-5521B]., INACTIVE FOR NEW DESIGN AFTER 22 AUGUST 1994. This specification establishes the requirements for one type of packing back-up washers for use in aircraft hydraulic systems.