- Page 6 of 14 - Seal & Cylinder Source, Inc.

851 WV PACKING

If your design is of medium to high pressure it is recommended that you utilize fabric reinforced rings. The following is a guide to pressure rating of multiple rings, including flat bottom rings.

SEAL INFORMATION
MATERIAL	FABRIC REINFORCED RUBBER AND BUNA-N
TEMPERATURE RANGE	-40° TO +250° F
PRESSURE RANGE	SEE CHART BELOW
SPEED	1.5 FT/SEC
PART NUMBER	(Prefix) - (ID) - (OD)

A homogeneous ring may be also used for sealing at low pressure. Do not include the homogeneous ring in calculating pressure rating. Due to the different material, it is difficult to rate this type of ring. If you wish to use all homogeneous rings, tests should be conducted to verify design stability.

PRESSURE RATING OF MULTIPLE RINGS
PRESSURE P.S.I.	NUMBER OF RINGS
250 - 500	3
500 - 2,000	4
2,000 - 5,000	5
5,000 - 8,000	6

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852 WV PACKING

If your design is of medium to high pressure it is recommended that you utilize fabric reinforced rings. The following is a guide to pressure rating of multiple rings, including flat bottom rings.

SEAL INFORMATION
MATERIAL	FABRIC REINFORCED RUBBER AND BUNA-N
TEMPERATURE RANGE	-40° TO +250° F
PRESSURE RANGE	SEE CHART BELOW
SPEED	1.5 FT/SEC
PART NUMBER	(Prefix) - (ID) - (OD)

A homogeneous ring may be also used for sealing at low pressure. Do not include the homogeneous ring in calculating pressure rating. Due to the different material, it is difficult to rate this type of ring. If you wish to use all homogeneous rings, tests should be conducted to verify design stability.

PRESSURE RATING OF MULTIPLE RINGS
PRESSURE P.S.I.	NUMBER OF RINGS
250 - 500	3
500 - 2,000	4
2,000 - 5,000	5
5,000 - 8,000	6

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PS1500 PISTON SEAL ASSEMBLIES

Totally interchangeable with Style PS1400 PTFE piston seals, Style PS1500 piston seals are molded from tough 60 shore D durometer polyurethane. During the molding process, a .002 in. thick band of molybdenum is molded into the outside diameter of the seal ring for reduced friction. PS1500 piston seals are easily stretched over the piston and recover rapidly with the elimination of the 'cold flow' characteristics found in PTFE seals. Piston diameter 'F' dimensions are given for pistons without wear rings.

SEAL INFORMATION
MATERIAL	POLYURETHANE SEAL RUBBER ENERGIZER
TEMPERATURE RANGE	-40° to +200° F
PRESSURE RANGE	0 to 5,000 PSI
SPEED	3 FT/SEC
PART NUMBER	(Piston Seal)(Type of Seal) - (Size)

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HU U-SEALS

Price range: $6.77 through $131.85
Style HU seals feature a reverse bevel lip design and are molded from high quality urethane. The balanced symmetrical design makes them ideal for rod or piston applications. V=FLUOROCARBON

MATERIAL 90A URETHANE

TEMPERATURE RANGE -50° to +200° F

PRESSURE RANGE 0 to 5,000 PSI

SPEED 3 FT/SEC

PART NUMBER (Prefix)(CS) - (Inside Dia) - (Height)
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PS1400 PISTON SEAL ASSEMBLIES

INSTALLATION OF PTFE PISTON SEALS
Installing PTFE piston seals is not always an easy task. The use of installation tools is recommended but often not convenient when working with a wide variety of sizes and applications. Finger installations are practical with rings of smaller cross-sections. Using fingers or a rounded plastic stick, knead the ring over the piston into the groove. With rings of larger cross-sections it may be necessary to heat the ring. Warming the ring in water or oil at 130&deg F or 140&deg F for about 5 minutes will soften the material for easier installation. Always avoid inconsistent stretching or overstretching of the PTFE seal.

To prevent the PTFE ring from snapping into the wrong groove, cover wear ring grooves with plastic tape.

After seal installation, assembly of the cylinder may be difficult if the piston seal is loose on the piston or the cylinder has an inadequate leading edge chamfer. In such cases, compress the piston seal with belting or a suitable hose clamp. If the piston seal must pass threads or any other sharp edges during the cylinder assembly, cover the edges with plastic tape or wrap.

SEAL INFORMATION
MATERIAL	15% GLASS FILLED PTFE SEAL RUBBER ENERGIZER
TEMPERATURE RANGE	-40° to +220° F
PRESSURE RANGE	0 to 5,000 PSI
SPEED	12 FT/SEC
PART NUMBER	(Piston Seal)(Type of Seal) - (Size)

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PSC PISTON SEAL ASSEMBLIES

The Style PSC is a double acting piston seal designed to replace o-rings, quad-rings, and T-seals with the same groove dimensions (O-ring dash number). Style 575 urethane back-up rings may be added to either or both sides of the 'PSC' to accommodate wider groove widths. The PSC is made of 95A Durometer polyurethane, giving it high extrusion and abrasion resistance. The crowned sealing surface produces a positive seal from vacuum to high pressure.

NOTE: Piston diameter 'I' dimensions are given for pistons without wear rings.

SEAL INFORMATION
MATERIAL	95A POLYURETHANE SEAL 70 A NITRILE ENERGIZER
TEMPERATURE RANGE	-40° to +200° F
PRESSURE RANGE	0 to 5,000 PSI
SPEED	3 FT/SEC
PART NUMBER	(Prefix) - (O-Ring Size) - (Wide Base)

These Style PSC are molded from Fluorotrel which is a tough, wear-resistant material able to run at temperatures up to 275° F. Fluorotrel is also resistant to fluids that are incompatible with polyurethane such as water, glycol, water in oil, mineral oil and petroleum. Consult our Engineering Department for other fluids compatible with Fluorotrel
NOTE: Piston diameter "I" dimensions are given for pistons without wear rings.

SEAL INFORMATION
MATERIAL	55D FLUOROTREL SEAL 70A NITRILE ENERGIZER
TEMPERATURE RANGE	-40° to +235° F
PRESSURE RANGE	0 to 5,000 PSI
PART NUMBER	(Prefix) - (O-Ring Size) - (Fluorotrel)

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MPSU PISTON SEAL

Molded from tough, wear resistant polyester with additives of 5% glass fiber and 5% PTFE these seals are totally interchangeable with style MPS seals of the same dimensions. Nitrile o-rings are used as energizers.

SEAL INFORMATION
MATERIAL	GLASS / PTFE FILLED POLYESTER SEAL, RUBBER ENERGIZER
TEMPERATURE RANGE	-40° to +230° F
PRESSURE RANGE	0 to 5,000 PSI
PART NUMBER	(Prefix) - (ID) x (W) x (CS1)

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PSU PISTON SEAL ASSEMBLIES

Our Style PSU piston seal, or uniring, is a laminated one piece double acting seal made of cast polyurethane. The tough outer layer is highly resistant to abrasion and is impregnated with molybdenum disulfide to reduce friction. The softer inner layer acts as a static seal and also energizes the OD to make full contact with the bore. This seal may be used to replace an existing Uniring or other seals of the same dimensions - O-rings, O-rings with back-ups, T-seals, U-seals, etc. NOTE: Piston diameter 'I' dimensions are given for pistons without wear rings.

SEAL INFORMATION
MATERIAL	60D & 57A URETHANE COMPOSITE
TEMPERATURE RANGE	-65° to +220° F
PRESSURE RANGE	0 to 5,000 PSI
SPEED	3 FT/SEC
PART NUMBER	(Prefix) - (OD) x (ID) x (Groove Width)

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TP PISTON T-SEALS

T-Seals are non-spiraling and extrusion resistant to 5,000 psi with improved tolerances.
IB = Intermediate Base, WB = Wide Base

Intermediate and Wide Base T-Seals are designed to fit MIL-5514F o-ring glands only and interchange with 1 o-ring / 1 back-up ring and 1 o-ring / 2 back-up ring grooves, respectively.

SEAL INFORMATION
MATERIAL	BUNA-N RUBBER SEAL - HARD PLASTIC BACK-UPS
TEMPERATURE RANGE	-35° to +220° F
PRESSURE RANGE	0 to 5,000 PSI
SPEED	3 FT/SEC
PART NUMBER	(Prefix) - (Size)

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HMU POLYURETHANE ROD U-SEALS

Price range: $7.03 through $86.49
The HMU style multi-lip rod u-seal combines the pressure-compensating, uni-directional characteristics of a u-seal with the multi-lip sealing effectiveness of compression-type stacked-packings. Made from premium materials, the HMU utilizes several sealing lip edges for dry rod performance while minimizing friction. The multi-lip design maintains a critical sealing edge even though increasing pressure moves the line of contact down towards the heel. NOTE: If Product number ends in 'U' it's constructed of Polyurethane, if sku ends in 'N' or 'V' it's Homogenous.

MATERIAL 92A URETHANE

TEMPERATURE RANGE -40° to +200° F

PRESSURE RANGE 0 to 5,000 PSI

SPEED 3 FT/SEC

PART NUMBER (Prefix)(CS) - (ID) - (Height)
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KR ROD BUFFER SEALS

Molded in Bronze Filled PTFE with a rubber energizer, this seal absorbs the shock of pressure spikes to protect the rod seal.

SEAL INFORMATION
MATERIAL	BRONZE FILLED PTFE SEAL RUBBER ENERGIZER
TEMPERATURE RANGE	-40° to +220° F
PRESSURE RANGE	0 to 5,000 PSI
SPEED	12 FT/SEC
PART NUMBER	(Prefix)(CS) - (Inside Dia)(O-Ring CS)

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KW WIPER RINGS

Price range: $7.05 through $138.01

Suffix 'N' designates nitrile material.

SEAL INFORMATION

MATERIAL 90A URETHANE

TEMPERATURE RANGE -40° to +200° F

SPEED 3 FT/SPEED

PART NUMBER (Prefix) (Size)

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MWRA-L WEAR RINGS

Price range: $7.24 through $25.53

Primarily a British design, this can be installed one or two in a groove. Excellent wear characteristics.

SEAL INFORMATION

MATERIAL ACETAL

TEMPERATURE RANGE -40° to +230° F

SPEED 3 FT/SEC

PART NUMBER (Prefix) - (ID) x (OD) X (H)

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614 NYLON ROD BEARINGS

Style 614 rod bearings are available in nylon material. These products are used extensively in hydraulic cylinders due to their low rate of wear and non-scoring properties. Excellent for those heavy duty applications that require a sturdy bearing. Most of these bearings are solid, although some may be split.

SEAL INFORMATION
TEMPERATURE RANGE	-40° to +275° F
TENSILE STRENGTH	25,000 PSI
COMPRESSIVE STRENGTH	26,000 PSI
PART NUMBER	(Prefix) - (ID) - (Width)

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MBN ROD U-SEAL BACK-UP RINGS

Price range: $7.51 through $111.40

Hard nylon back-up rings for use with U-seals.

SEAL INFORMATION

MATERIAL NYLON

TEMPERATURE RANGE -67° to +212° F

PRESSURE RANGE 0 to 5,000 PSI

SPEED 3 FT/SEC

PART NUMBER (Prefix) - (ID) - (C.S) - (W)

SCS PART NUMBERS

MBN - 75 X 2.5 X 2.5

Type of Seal Inside
Diameter Cross
Section Width

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UFN-EI ROD U-SEALS

Price range: $7.52 through $194.84
Incorporating a rubber seal lip, a rubberized fabric heel and an acetal back-up ring. This seal provides excellent sealability and high extrusion resistance.

RUBBER, FABRIC, ACETAL

TEMPERATURE RANGE -22° to +212° F

PRESSURE RANGE 0 to 5,800 PSI

SPEED 1.5 FT/SEC

PART NUMBER (Prefix)(CS) - (ID) - (Height)
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