14 C.F.R. § 65.133 Seal.
Title 14 - Aeronautics and Space
Each certificated parachute rigger must have a seal with an identifying mark prescribed by the Administrator, and a seal press. After packing a parachute he shall seal the pack with his seal in accordance with the manufacturer's recommendation for that type of parachute.
Title 14: Aeronautics and Space
PART 65—CERTIFICATION: AIRMEN OTHER THAN FLIGHT CREWMEMBERS
Subpart F—Parachute Riggers
§ 65.133 Seal.
