- Page 8 of 14 - Seal & Cylinder Source, Inc.

853 WV PACKING

$7.53 – $25.55

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

Select options Details

MPU PISTON U-SEALS

$7.53 – $71.39

Molded from high quality urethane and designed specifically for piston applications. A = Alternative to NOK

SEAL INFORMATION

MATERIAL URETHANE

TEMPERATURE RANGE -22° to +212° F

PRESSURE RANGE 0 to 5,000 PSI

SPEED 3 FT/SEC

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

Select options This product has multiple variants. The options may be chosen on the product page Details

U-Z U-SEALS

$7.54 – $463.46

The Z-Seal is a squeeze type seal, combining the excellent sealability and low compression set of a resilient rubber lip with the greater anti-extrusion characteristics of a hard thermoplastic base. Under low pressure conditions, the sealing lip provides its own compressive seal force. As pressure increases, hydrostatic pressure is mechanically transmitted through the elastomeric seal element into the anti-extrusion base. The applied force then deflects radially in a controlled manner, closing the extrusion gap behind the sealing lip. Under this condition, maximum sealing effectiveness is achieved.

SEAL INFORMATION
MATERIAL	95A URETHANE 70A NITRILE RUBBER
TEMPERATURE RANGE	-40° to +200° F
PRESSURE RANGE	0 to 5,000 PSI
SPEED	3 FT/SEC
PART NUMBER	(Prefix)(CS) - (Inside Dia) - (Height)
	Suffix: ZF = Fluorotrel (-40° to +235° F) ZL = Low Temperature Nitrile Sealing Lip (-65° to +200° F) ZLF = (-65° to +200° F)

Select options Details

MPSU PISTON SEAL ASSEMBLIES

$7.54 – $24,334.00

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)

Select options Details

595 BACK-UP RINGS

$7.57 – $80.10

Used primarily as an anti-extusion device for u-seals, these back-up rings combine high performance with very low friction. 'ST' suffix designates a split ring.

SEAL INFORMATION

MATERIAL PTFE

TEMPERATURE RANGE -100° TO +500°F

PRESSURE RANGE VARIES ACCORDING TO DIAMETRAL CLEARANCE

PART NUMBER (prefix) - (Dash No.) (config.)

Select options This product has multiple variants. The options may be chosen on the product page Details
MPSA-65 PISTON SEAL ASSEMBLIES

$7.95 – $47.74

Consisting of a nitrile seal and two split acetal bearing, this assembly is used in light duty applications and can be installed on one or two piece pistons.

SEAL INFORMATION

MATERIAL NITRILE SEAL
ACETAL BEARING

TEMPERATURE RANGE -22° to +212° F

PRESSURE RANGE 0 to 3,000 PSI

SPEED 1.5 FT/SEC

Select options This product has multiple variants. The options may be chosen on the product page Details
RTU ROD U-SEALS

$8.04 – $57.50
The twin lip design helps solve difficult rod sealing problems by providing lower friction, increased stability, and high dynamic lip force, while preventing air penetration from outside the cylinder.

MATERIAL 92A URETHANE

TEMPERATURE RANGE -40° to +225° F

PRESSURE RANGE 0 to 5,000 PSI

SPEED 3 FT/SEC

PART NUMBER (Prefix)(CS) - (ID) - (Height)
Select options This product has multiple variants. The options may be chosen on the product page Details

SEAL INFORMATION
MATERIAL	NITRILE SEAL ACETAL BEARING
TEMPERATURE RANGE	-22° to +212° F
PRESSURE RANGE	0 to 3,000 PSI
SPEED	1.5 FT/SEC

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)

Select options Details

DPU PISTON U-SEALS

$8.08 – $223.33
Specifically designed as piston seals, these u-seals are engineered to seal on their outside diameter. They offer extended service life and maximum reliability in piston sealing.

MATERIAL 92A URETHANE

TEMPERATURE RANGE -65° to +230° F

PRESSURE RANGE 0 to 6,000 PSI

SPEED 3 FT/SEC

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

MAXIMUM EXTRUSION GAP PRESSURE / MAX. DIAM. GAP: | 1,000 PSI/.032 | | 3,000 PSI/.015 | | 5,000 PSI/.012 | | 6,000 PSI/.009 |
Select options This product has multiple variants. The options may be chosen on the product page Details
MHP27 PISTON U-SEALS

$8.09 – $14.14

Molded from 70A nitrile for high sealability they employ a hard nylon anti-extrusion ring as a companion piece.

SEAL INFORMATION

MATERIAL 70A NITRILE
ACETAL BACK-UP

TEMPERATURE RANGE -20° to +220° F

PRESSURE RANGE 0 to 4,000 PSI
SPEED 3 FT/SEC

PART NUMBER (PREFIX) - (OD)

Select options This product has multiple variants. The options may be chosen on the product page Details

SEAL INFORMATION
MATERIAL	70A NITRILE ACETAL BACK-UP
TEMPERATURE RANGE	-20° to +220° F
PRESSURE RANGE	0 to 4,000 PSI
SPEED	3 FT/SEC
PART NUMBER	(PREFIX) - (OD)

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

Select options Details

935 INDIVIDUAL VEE RINGS AND ADAPTORS

$8.17 – $64.00

PTFE Vee Rings

SEAL INFORMATION
MATERIAL	PTFE
TEMPERATURE RANGE	-100° to +400° F
PRESSURE RANGE	0 to 5,000 PSI
SPEED	12 FT/SEC
PART NUMBER	(Prefix) - (Size)

Select options Details

MPS PISTON SEAL

$8.27 – $114.62

Molded from filled PTFE and machined to close tolerances these seals feature low friction and excellent wear characteristics. Nitrile o-rings are used for energizers.

SEAL INFORMATION
MATERIAL	PTFE PISTON SEAL 70A NITRILE ENERGIZER
TEMPERATURE RANGE	-40° TO +230° F
PRESSURE RANGE	0 TO 5,000 PSI
SPEED	12 FT/SEC
PART NUMBER	(Prefix) - (ID) x (W) x (CS1)

Select options Details

MRTU ROD U-SEALS

$8.27 – $70.45

Molded in a tough urethane this seal employs an additional lip near the heel. The Twin Lip design provides stability, friction-reducing lube retention, and a contaminant blocker. VME - Secondary lip is further from heel than standard MRTU. NOTE: E = European Urethane

SEAL INFORMATION
MATERIAL	URETHANE
TEMPERATURE RANGE	-40° to +225° F E: -22° to +212° F
PRESSURE RANGE	0 to 5,000 PSI
SPEED	3 FT/SEC
PART NUMBER	(Prefix) - (ID) x (OD) x (H)

Select options Details

DRU Rod U-Seals

$8.45 – $194.43

These seals are specifically designed to seal on their inside diameter and engineered to attain maximum life and reliability in dynamic rod sealing.

SEAL INFORMATION
MATERIAL	92A URETHANE
TEMPERATURE RANGE	-65° to +230° F
PRESSURE RANGE	0 to 6,000 PSI
SPEED	3 FT/SEC
PART NUMBER	(Prefix)(CS) - (ID) - (Height)

Select options Details

HYDROLOCK VEE PACKING SETS

$8.48 – $297.86

These vee sets utilize hytrel & nylon vees to cover pressure from 0 to 6,000 psi and provide excellent extrusion resistance. Male & female bearings are molded from glass filled nylon. NOTE: These vee sets do not contain guidelock bearings. They are sold seperately (designated by the 'HDLG-' product code prefix). FB = FEMALE BEARING, 1740 = 3 VEES, 1741 = 4 VEES, 1742 = 5 VEES

SEAL INFORMATION
MATERIAL	HYTREL & NYLON
TEMPERATURE RANGE	-40° to +220° F
PRESSURE RANGE	0 to 6,000 PSI
SPEED	1.5 FT/SEC
PART NUMBER	(Prefix) - (# of vees) - (OD) - (Bearing Height)

Select options Details