Characteristics
The Piston Uniring is a Dual
Durometer, one piece double acting piston
seal. It consists of a (Duro 60 D) dynamic
sealing and wear lamina bonded to a (Duro
57 A) static sealing and activation lamina.
The material used for the static lamina has
a high resilience and extremely low compression
set. It functions as a seal energizing spring
element and assures positive sealing performance
throughout a broad pressure range. The dynamic
sealing element is made of a harder material,
selected for its high abrasion resistant
qualities.
Piston Unirings can readily be substituted
in existing cavities to replace other types
of double acting seals, such as TFE Piston
rings and the T Cross Section seals.
Unirings can easily be installed on one
piece pistons without costly and time consuming
assembly fixtures. They simplify the task
of eventual field replacement.
Piston Unirings permit substantial cost
savings in cylinder design by allowing
larger tolerances and poorer surface finishes.
Material
- Sealing Lamina: Unithane 460 D, Liquid
Cast Polyurethane, Duro 60 S.
- Activation Lamina: Unithane 157 A, Liquid
Cast Polyurethane, Duro 57 A.
- Fluid Compatibility: See Material Specifications:
Technical Bulletin US-96.
UniRing™ Piston Seals
replace these multi-piece systems with one
part.
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“O” Ring
with Back-up Washers
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“T”-Seals
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Polypak/Pip
Ring Combination
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> Spin molded at 3600
RPM in our exclusive Centrifugal
Molding Process
> Results cannot be duplicated by any other molding process
> Over ten million seals sold without a seal problem
> Competitively priced and cost efficient single piece design
> Low friction moly impregnated wear surface
> Dual durometer 60D outer lamina and 57A inner lamina.
Universal Seal developed the patented “spin cast” Centrifugal
Molding Process, producing seals that are more durable and functional
than those made by any other process. The innovative single piece
UniRing™ Piston Seal, just one of our seals produced using
this process, provides longer part life and, in most cases, lower
front end costs. Since 1967, Universal Seal has been creating superior,
trouble free seals and continues to be a major leader in seal innovation.
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