- Page 10 of 14 - Seal & Cylinder Source, Inc.

SPR PISTON RINGS

$8.11 – $209.61

IRON PISTON RINGS
When using iron piston rings, it is crucial to use the correct groove design for proper performance of the cylinder. Please use the following guidelines when cutting an iron piston ring groove

GROOVE WIDTH:: To permit the ring to slide freely into the groove, the groove must be at least 0.001 in. wider than the maximum piston ring width with a tolerance of +0.003 in./-0.000 in.
GROOVE DEPTH:: Grooves must be at least 0.015 in. deeper than the maximum radial wall thickness of the piston ring with a tolerance of +0.003 in./-0.000 in. This is to avoid any possibility of the ring bottoming in the groove when the ring is compressed to its working diameter.
RADIAL CLEARANCE:: The radial clearance between the cylinder bore and piston should be less than 1/3 of the radial wall thickness of the piston ring to ensure sealing effectiveness.

SEAL INFORMATION
MATERIAL	IRON
PART NUMBER	(Prefix) - (OD)
BC = Butt Cut
H = Hook Joint

END CLEARANCE
End clearance on piston rings depends on ring design, material and application. The following end clearances are provided as a standard for hydraulic cylinder applications.

DIAMETER	BUTT & ANGLE CUT END CLEARANCE	OVERLAPPING JOINT & STEP CUT CLEARANCE
.500 - 4.561	.003/.010	.005/.015
4.562 - 19.97	.005/.015	.010/.020
19.971 - 30.5	.010/.025	.015/.030

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PSU PISTON SEAL ASSEMBLIES

$5.36 – $44.71

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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PSM PISTON SEAL ASSEMBLIES

$8.05 – $56.42

Molded from 93 Shore A polyurethane with a 70 Shore A energizer, this seal utilizes the same groove dimensions as a standard o-ring to T-seal. One or two Style 575 back-up rings may be used for wider grooves. Extrusion resistant by design, this seal also is resistant to rolling and twisting. Installation is an easy two step snap-in procedure with no need to re-size before insertion into the bore. NOTE: Piston diameter 'I' dimensions are given for pistons without wear rings.

F= Fluorotrel, WB= Wide Base

SEAL INFORMATION
MATERIAL	93A URETHANE SEAL 70A NITRILE ENERGIZER
TEMPERATURE RANGE	-65° to +220° F
PRESSURE RANGE	0 to 5,000 PSI
PART NUMBER	(Prefix) - (Size)

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PSC PISTON SEAL ASSEMBLIES

$5.15 – $176.73

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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PSF PISTON SEAL ASSEMBLIES

$14.86 – $35.85

Designed to fit on one or two piece pistons, this seal employs a nitrile seal element, PTFE split back-up rings and polyacetal split bearing rings.

SEAL INFORMATION
MATERIAL	NITRILE SEAL POLYACETAL ANTI-EXTRUSION RING
TEMPERATURE RANGE	-22° to +212° F
PRESSURE RANGE	0 to 3,000 PSI
SPEED	3 FT/SEC
PART NUMBER	(Prefix) - (O-Ring Size)

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PSA-65 PISTON SEAL ASSEMBLIES

$10.20 – $126.18

Compact and easy to install, the Style PSA-65 piston seal is a simple and economical design for pressures up to 3,000 PSI. The assembly consists of a nitrile rubber seal and two polyacetal bearings to support the piston. For 1-piece pistons.

SEAL INFORMATION
MATERIAL	NITRILE SEAL POLYACETAL ANTI-EXTRUSION RING
TEMPERATURE RANGE	-22° to +212° F
PRESSURE RANGE	0 to 3,000 PSI
MAXIMUM SPEED	1.5 Ft/Sec.
PART NUMBER	(Prefix)(Type of Seal) - (Size)

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PSA-59 PISTON SEAL ASSEMBLIES

$17.95 – $223.25

This style is designed for 2 piece piston. The seal is a molded Nitrile rubber element with bonded rubberized fabric reinforcement and two anti-extrusion polyacetal bearings.

SEAL INFORMATION
MATERIAL	FABRIC REINFORCED NITRILE SEAL POLYACETAL ANTI-EXTRUSION RING
TEMPERATURE RANGE	-22° to +212° F
PRESSURE RANGE	0 to 5,000 PSI
MAXIMUM SPEED	1.5 ft / second
PART NUMBER	(Prefix)(Type of Seal) - (Size)

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PSA-58 PISTON SEAL ASSEMBLIES

$16.76 – $411.50

Style PSA-58 piston seals combine a heavy duty, fabric reinforced seal with two polyacetal 'L' bearings. This construction allows the seal to withstand pressures up to 5,000 PSI. 'L' bearings also react to pressure to prevent extrusion and support the piston. For 2-piece pistons.

SEAL INFORMATION
MATERIAL	FABRIC REINFORCED NITRILE SEAL POLYACETAL ANTI-EXTRUSION RING
TEMPERATURE RANGE	-22° to +212° F
PRESSURE RANGE	0 to 5,000 PSI
MAXIMUM SPEED	1.5 ft / second
PART NUMBER	(Prefix)(Type of Seal) - (Size)

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PSA PISTON SEAL ASSEMBLIES

$10.20 – $411.50

Designed to fit on one or two piece pistons, this piston seal employs a nitrile seal for high sealability, nylon split back-ups for extrusion resistance, and two split bearing rings. No further support bearings required.

SEAL INFORMATION
MATERIAL	90A NITRILE SEAL NYLON BACK-UP NYLON BEARING
TEMPERATURE RANGE	-22° to +212° F
PRESSURE RANGE	0 to 6,000 PSI
MAXIMUM SPEED	1.5 Ft/Sec.
PART NUMBER	(Prefix) - (Size)

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CTC PISTON SEAL ASSEMBLIES

$12.08 – $132.62

NOTE: Caterpillar part numbers are used as a reference only. We do not imply that these parts are original equipment parts.

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PS2000 PISTON SEAL ASSEMBLIES

$13.86 – $159.91

Nylon Step Cut
Some PS2000 piston seals utilize a round instead of a square energizer. Also, piston diameter "I" dimensions are given for pistons without wear rings. Many sizes shown are completely interchangeable with style PS914 piston seals.

SEAL INFORMATION
MATERIAL	GLASS FILLED NYLON SEAL RUBBER ENERGIZER
TEMPERATURE RANGE	-40° to +220° F
PRESSURE RANGE	0 to 5,000 PSI
SPEED	3 FT/SEC
PART NUMBER	(Piston Seal)(Type of Seal) - (Size) - (Groove Width)

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PS914 PISTON SEAL ASSEMBLIES

$60.21 – $291.96

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

SEAL INFORMATION
MATERIAL	GLASS FILLED NYLON SEAL RUBBER ENERGIZER
TEMPERATURE RANGE	-40° to +220° F
PRESSURE RANGE	0 to 6,000 PSI
SPEED	3 FT/SEC
PART NUMBER	(Piston Seal)(Type of Seal) - (Size) - (Groove Width)

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PS2470 PISTON SEAL ASSEMBLIES

$17.95 – $139.73

These piston seals provide bi-directional, low friction sealing with increased stability and superior leakage control. The square cut energizer provides low pressure sealing and eliminates backside leakage. This seal also effectively seals between different fluids on each side of the piston seal, making gas/liquid sealing combinations possible.

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

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PSQ PISTON SEAL ASSEMBLIES

$45.92 – $149.10

These piston seals provide bi-directional, low friction sealing with increased stability and superior leakage control. The square cut energizer provides low pressure sealing and eliminates backside leakage. This seal also effectively seals between different fluids on each side of the piston seal, making gas/liquid sealing combinations possible. NOTE: Piston diameter 'I' dimensions are given for pistons without wear rings.

SEAL INFORMATION
MATERIAL	40% BRONZE FILLED PTFE SEAL, RUBBER ENERGIZER AND QUAD® RING
TEMPERATURE RANGE	-40° to +250° F
PRESSURE RANGE	0 to 5,000 PSI
SPEED	6 FT/SEC
PART NUMBER	(Piston Seal) - (Size)

MAXIMUM EXTRUSION GAP
PRESSURE	1000 PSI	3000 PSI	5000 PSI
MAX DIAM. GAP BORE 1-1/2" - 5"	0.024"	0.008"	0.005"
MAX DIAM. GAP BORE 6" - 10"	0.030"	0.010"	0.006"

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PS2700 PISTON SEAL ASSEMBLIES

$6.36 – $68.76

This seal, molded from high grade polyester with 5% glass fiber and 5% PTFE, may retrofit the PS1800 seals, considering all dimensions are comparable. This seal material, with a high degree of 'memory', stretches over the piston and snaps in the groove for immediate assembly. These seals also feature low friction and high abrasion and extrusion resistance which helps to eliminate assembly damage. Piston diameter 'F' dimensions are given for pistons without wear rings.

SEAL INFORMATION
MATERIAL	GLASS/PTFE FILLED POLYESTER SEAL, RUBBER ENERGIZER
TEMPERATURE RANGE	-40° to +220° F
PRESSURE RANGE	0 to 5,000 PSI
SPEED	3 FT/SEC
PART NUMBER	(Piston Seal)(Type of Seal) - (Size)

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PS1900 NON-STANDARD PISTON SEAL ASSEMBLIES

$23.12 – $93.46

These specifically sized seals are for certain OEM cylinders (primarily Heil & Timberjack). Their use is intended for existing housings where the old seals are dimensionally comparable to the table below. Please call your sales representative if you need additional assistance.

SEAL INFORMATION
MATERIAL	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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