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ADVANCING ADHESIVES: Sealants in Space

January 1, 2010
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Royal Adhesives and Sealants' aircraft sealant qualifies to aerospace sealant specification.



While a C-17 Globemaster III flies overhead, a B1-B Lancer taxis on the runway ready to take off on a combat mission Nov. 11, 2009, at an air base in Southwest Asia. Carrying the largest payload of guided and unguided weapons in the Air Force inventory, the multi-mission B-1 is the backbone of America’s long-range bomber force. (U.S. Air Force photo/Staff Sgt. Robert Barney)

Royal Adhesives and Sealants LLC has announced that its Hardman® WS 8020 RC rapid-cure manganese dioxide cured polysulfide aircraft sealant has been fully qualified to SAE International’s aerospace material (AMS) 8802 Class B aircraft fuel tank sealant specification.

Hardman aircraft sealants are manufactured at the company’s Wilmington, CA, facility, which has been certified to the AS 9100, ISO 9001/2000 and AS7200/1 NADCAP quality systems requirements and sold to aerospace and defense customers that require qualified sealants for demanding fuel tank and environmental sealing applications.

Royal CEO Ted Clark said, “This product qualification is a significant achievement for the company and underscores our efforts to listen to customers’ requirements for improving quality and reducing costs through sealants that cure 50% more rapidly than the current generation sealants. This allows for faster aircraft assembly and reduces the time for repair and maintenance, which will reduce our customers’ overall costs.”

AMS 8802-qualified aircraft sealants are used on virtually all U.S.-manufactured military aircraft. In addition to its rapid cure, WS 8020 RC exhibits outstanding resistance to aviation gasoline and jet fuel, as well as resistance to chemicals and petroleum products common to the aircraft industry. It also offers excellent flexibility and bond strength to most metal substrates, including aluminum, stainless steel, steel, advanced composites, and many coatings under extremes of temperature, weathering, and stress.

Hardman WS 8020 RC is a rapid-cure aircraft sealant qualified to Class B of the AMS 8802 sealant specifications. WS 8020 RC Class B-2 has a work life of two hours, but cures to 30 shore A in just 12 hours - a reduction of 12 hours over standard AMS 8802-qualified sealants that have a cure rate of 24 hours.

“The qualification of Hardman WS 8020 RC aircraft sealant to AMS 8802 will benefit all military aircraft manufacturers, as well as military maintenance operations,” said Jeff Swindells, product manager, Aerospace Sealants. “In addition, WS 8020 RC is either qualified or under qualification at a number of business jet manufacturers in the United States and Europe.”

Two C-130 Hercules crew chiefs conduct a post-flight inspection of their aircraft during a Mobility Air Forces Exercise Nov. 18, 2009, at Nellis Air Force Base, NV. About 40 C-17 Globemaster IIIs and C-130 aircraft from Air Force bases around the world few approximately 400 soldiers from Fort Bragg, NC, during the airdrop portion of the exercise. (U.S. Air Force photo/Lawrence Crespo)

Royal Adhesives and Sealants’ Wilmington, CA, division is focused on serving both domestic and international clients in the aerospace and defense market. It is a leading manufacturer and marketer of polysulfide sealants and electrical potting compounds for aerospace, defense, and marine applications. The company also manufactures specialty epoxy coatings for industrial-maintenance applications.

High-performance adhesives, sealants, encapsulants, potting compounds and mirror mastics make up the Royal Adhesives & Sealants product mix. These high-performance products are used in a variety of markets including aerospace and defense, assembly, automotive and recreational vehicle, electrical/electronic, filter, marine, and general industrial. The company also offers a range of thermosetting epoxy and urethane, solvent-based, and water-based technologies to meet the most demanding adhesive and sealant applications.

About Royal Adhesives and Sealants LLC

Royal Adhesives and Sealants manufactures and markets industrial adhesives and sealants, commercial roofing adhesives, and mirror mastics. The company makes solvent- and water-based adhesives and sealants that are packaged in totes, drums, pails, cartridges, and foil-wrapped sausages.

For more information, visit www.royaladhesives.com.


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