Disogrin® LSU Seals - Simrit

INTRODUCTION
LSU Seals
Material Selection
Select the best combination of primary sealing and energizer
materials to meet your application requirements.
Application parameters to take into consideration are as follows:
• Speed — The system speed in cycles or running speed (strokes/minute; meters or feet per second).
• Temperature — The operating temperatures of the system measured in Fahrenheit or Celsius.
• Application — The system environment where the equipment is being used.
• Media — The fluid or media to be sealed.
• Pressure — The system pressures including pressure spikes.
• Size — The metal housing size where seal will operate.
DISOGRIN LSU Family of Materials:
(Refer to pages 51-54 for properities and chemical compatibility).
◆ 2093 (MDI / Polyester / Polyurethane 93A)
This is Disogrin’s standard polyurethane material for
LSU family, temperature range –65 o F to +220 o F, it
exhibits excellent extrusion and abrasion resistance
for long service life, when used in standard petroleum
based hydraulic fluids.
◆ 2053 (Hytrel ® / Thermoplastic Elastomer 52D)
◆ 2065 (Hytrel ® / Thermoplastic Elastomer 65D)
◆ 2075 (Hytrel ® / Thermoplastic Elastomer 75D)
These materials exhibit outstanding extrusion
resistance, temperature range –65 o F to +275 o F. Used
in petroleum based hydraulic fluids, also some
phosphate Ester and water / glycol fire resistant
fluids.
◆ 9250 (TODI / Polyurethane 92A)
This is the premiere Disogrin polyurethane material,
temperature range –65 o F to +300 o F, it possess
extremely high mechanical properties, outstanding
resistance to abrasion, tear, and extrusion over a
large range of temperatures. Suitable for petroleum
based, bio-degradable (synthetic and natural Ester)
based fluids, and water under 140 o F.
◆ N3101 (Nitrile / Buna N 70A)
◆ N3102 (Nitrile / Buna N 90A)
These materials exhibit a wide range of fluid and
temperature capabilities along with good compression set
properties. Is used in petroleum based, water-oil
emulsions, and water / glycol fluids. Temperature range
typically is –40 o F to + 250 o F, special formulations can
extend range from –65 o F to +300 o F.
◆ E3201 (Ethylene Propylene / EPDM 70A)
◆ E3202 (Ethylene Propylene / EPDM 90A)
(Ethylene Propylene is not recommended for petroleum
based fluids), these materials are suitable for phosphate
ester based fluids as well as water-glycol and water systems.
Temperature range typically –65 o F to +300 o F, special
formulations can extend usage in steam up to +400 o F.
◆ V3301 (Fluorocarbon / FKM 75A)
◆ V3302 (Fluorocarbon / FKM 90A)
Fluorocarbons are formulated to extend the high
temperature capabilities and are suitable for most
petroleum based fluids. Typical temperature range is
–20 o F to +400 o F, special formulations extend range from
–40 o F to +485 o F.
◆ 6865 (TODI / Polyurethane 70A)
This material possesses extremely high mechanical
properties, excellent abrasion, tear, and extrusion
resistance with low compression set. Outstanding cold
temperature properties, temperature range –115 o F to
+250 o F. Usable in petroleum based, bio-degradable
(synthetic and natural Ester) based fluids, and water
under 140 o F.
* Reference page 6 for Part Numbering Nomenclature
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S (Stainless Steel)
Stainless Steel energizers have no compression
set, no temperature limitation, and no fluid compatibility
issues, they retain a consistent radial load insuring positive
sealing at any pressure and/or temperature.
9500 (POM / Polyacetal)
9400 (PA / Polyamide / Glass Filled)
These materials are extremely rigid and extrusion
resistant, longwearing and stable. Temperature range
-65 o F to +300 o F.
-LSU Seals
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