HUNGER PARTS

3.150" x 3.543" x 0.591" (80.00 mm x 90.00 mm x 15.00 mm)

H&D SKU: PU-TDMA 90X80X15

Product Availability : On Back Order

List Price: $143.56

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DESCRIPTION

Manufactured by Hunger Hydraulics®, the PU-TDMA metric tandem seal for multi-fluid outside sealing applications is used to seal pistons and plungers. The PU-TDMA consists of 2 parts; an elastic ring made of polyurethane with two sealing lips, and a slide ring made of abrasion resistant Bronze-filled PTFE with two sealing edge. Prior to fitting, the sealing lips protrude beyond the nominal diameter of the seal and are pressed against the cylinder wall after fitting. Thus effective sealing is provided even at zero pressure.

The slide ring is surrounded by the elastomer sealing ring and moves axially in direct contact with the inside of the tube. With increasing pressure and compression of the sealing ring, it is the slide ring which is predominantly pressed against the inside of the cylinder. The outer sealing surface of the PU-TDMA mainly comprises the slide ring which has excellent sliding properties.

The PU-TDMA seal is recommended for use where different fluids on each side are to be separated. It is also suitable for sealing grease chambers against the ingress of water or other fluids. Due to it's good dry running properties, it can be used as a fluid seal on one side and simultaneously as a dirt wiper on the other side.

SEAL INFORMATION

Material Type (Primary Seal): POLYURETHANE

Material Type (Slide Ring): BRONZE-FILLED PTFE

Durometer (Shore A) POLYURETHANE: 87

Durometer (Shore D) SLIDE RING: 69

Temperature Range (F): -31 TO 212

Max Pressure (psi): 3600

Extrusion Gap at Various Pressures (mm):

1,500 PSI: 0.30
3,600 PSI: 0.30

Max Speed (ft/sec): 3.0

Mating Surface Roughness - Ra (µm) - DYNAMIC: 0.3<>0.5

Mating Surface Roughness - Ra (µm) - STATIC: 0.8 MAX

Part Number Definition (Metric): PU-TDMA (BORE DIAMETER)X(ID)X(HT)

Additional Part Number Definition (Metric): 100MM BORE X 90 ID X 15 = PU-TDMA 100X90X15

Products specifications

ID (Inch)	3.150
OD (Inch)	3.543
Height (Inch)	0.591
ID (Metric)	80.00
OD (Metric)	90.00
Height (Metric)	15.00

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