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Master Seal ®

Master Seal® Washers are More than Just Washers. Because of an unique bonding process, which bonds a strong backing material to a resilient facing material, Aztec’s Master Seal® will perform a function that neither material could perform alone. Where sealing challenges are presented, the conical design directs the flow of the elastomeric portion toward problem areas. When problems call for cushioning or vibration control, the facing material will also provide the solution.

See Also

P36 Saddle Washers

Seal in…or Seal out

When installed for sealing, the materials in Aztec’s Master Seal® washer compress against either a flexible or inflexible surface to permanently seal in or seal out any environment, natural or industrial. Facing materials are engineered to provide optimal resistance to weathering from ozone, ultraviolet light and chemical agents.Aztec’s unique Master Seal® products are designed to provide a permanent seal in a wide variety of applications, including:

  • Metal roofs and siding where the expansion and contraction of metal require a permanent resilient seal
  • Dishwashers - To avoid leaksMarine - Structural and electronic
  • Air filters - Dust control
  • Automotive - Air cleaner assemblies, engine block heaters, emission control equipment, body sealingOther useful applications include:Small and large appliances, vacuum cleaners and refrigerators
  • Heating ventilation/air conditioning (HVAC) equipment
  • Silos, tanks, bins and other vessels for liquids and solids
  • Exhaust systems
  • Panel and enclosures
  • Environmentally controlled areas

Features Include:

  • Quality elastomerics, meeting the need for elasticity, memory, temperature extremes, chemical, ozone and sunlight-resistance.
  • Conical design directs flow of facing materials to form a seal conforming to both fastener and sealing surface.
  • Full-face design cushions fragile surfaces and minimizes vibration.
  • Inside diameter sizes from -1/4” to 3”and corresponding metric range.
  • Choice of many backing materials.
  • Choice of various colors and finishes.
  • Choice of various facing materials.

Cushioning and Vibration Control

Fourty years of proven experience in testing and retesting compounded formulas have led to the perfection of Aztec’s Master Seal® washers. Our washers possess extraordinary elasticity and memory when cushioning and vibration control are needed.As the washer is compressed and fastened against a substrate, the facing material serves as a permanent cushion. This feature protects the substrate from installation damage (spinning fastener and/or torque) and from vibration damage.When used for cushioning, Master Seal® washers are especially effective on glass, plastic, fiberglass, porcelain and painted surfaces. The cushioning effect eliminates scratching, crazing, chipping and other surface damage.

Master Seal® washers solve a variety of problems in numerous applications, including:

  • Archery - Protects sensitive bow sights.
  • Motorcycles - Protects fairings and components.
  • Noise Control - Electromechanical automotive devices and motor mounts for compressors and other equipment.
  • Fragile surfaces - Where crazing, cracking and chipping are problems. Other applications include:
  • Metal construction buildings
  • Automotive
  • Aircraft
  • Glass and mirror installations
  • Architectural pan

MASTER SEAL® OUTER DIAMETER CHART

Download PDF - Outer Diameter Chart

 

 

MASTER SEAL® PART NUMBER KEY

Download PDF Version of Part Number Key

METAL
BACKING

METAL
THICKNESS

FACING MATERIALS

SPECIAL DESCRIPTIONS

A - ALUMINUM A - 10 Gauge A - .031" (.8MM) EPDM BLACK A - OVAL INSIDE DIA.
B - BRASS B - 12 Gauge B - SEE PRINT
C - COPPER C - 14 Gauge C - .065" (1.7MM) EPDM GREY C - CLEARD ID -SEE PRINT
D - SILICONE BRONZE D - 16 Gauge D - .065" (1.7MM) EPDM BLACK CONDUCTIVE D - SADDLE WASHER
E E - 18 Gauge E - .065" (1.7MM) EPDM BLACK E
F F - 22 Gauge F - 076" (2MM) EPDM GREY F - FLOW - CONE
G - GALVANIZED STL G - 24 Gauge G - .076" (2MM) EPDM BLACK G - 20 DUROMETER
H H - 26 Gauge H - .100" (2.5MM) EPDM CONDUCTIVE H - 30 DUROMETER
I I I - .114" (3MM) EPDM GREY I - 40 DUROMETER
J J - 20 Gauge J - .114" (3MM) EPDM BLACK J - 50 DUROMETER
J
K K K - .130" (3.3MM) EPDM BLACK K - 60 DUROMETER
L L - .036" MIN L - .152" (4MM) EPDM GREY L - LIKO WASHER
M - MONEL M - .041" MIN M M
N N N - .065" (1.7MM) NEOPRENE BLACK N
O O - .040"THICK O - ASBESTOS SUBSTITUTE O - OVAL OUTSIDE DIA.
P P - .062" THICK P - PLAIN STEEL - NO RUBBER P - #4/6
Q Q Q - SPECIAL MATERIAL Q - #6/8
R R - .125" THICK R - .065" (1.7MM) WHITE BUTYL R - #8/10
S - STAINLESS STL TYPE 304 S S - .076" (2MM) SILICONE RED S - #10/12
T - STAINLESS STL TYPE 316 T T - .040"(1MM) NEOPRENE BLACK T - #12/14
U U U - .065" (1.7MM) NEOPRENE WHITE U - #10/14
V V V - .076"(2MM) VITON (BLACK OR BROWN) V - #8/12
W W W - .090" (2.3MM) NEOPRENE BLACK W
X X X - .130" (3.3MM) NEOPRENE BLACK X - STANDARD
Y Y Y - .188" (1.7MM) NEOPRENE -PER-MIL-SPEC Y
Z - ZINC -A-LUME Z Z - .188" (4.8MM) NEOPRENE FOAM BLACK Z - PUNCH OUT
 
   
   
   
 
 
 
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Master Flash®, Universal Master Flash®, Universal Retrofit Master Flash®, Retrofit Master Flash®, Residential Master Flash®,
Square Vent Retrofit Master Flash®, Master Seal® and Master Plug® are registered trademarks of Aztec Washer Company, Inc.
Please Note: Aztec Washer industry leading metal roof flashings and pipe flashing products for residential and commercial
projects are available online from trusted retailers.

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