Q Seal Piston - Eclipse Engineering

EQS Q Piston seals are bi-directional, elastomer energized seals primarily used in reciprocating hydraulic and gas-over-oil piston accumulator applications. Advantages include optimum leakage control, low friction, and simple groove design. The EQS profile will retrofit non-Eclipse seals designed for similar hardware.

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Typical Range of Application

Pressure

5,000 psi

[350 bar] MAX

Temperature*

-30°F to 250°F

[-34°C to 121°C]

Velocity

200 fpm [1 m/s]

MAX

Media

Hydraulic/Mineral Oil, Brake Fluid, Gases, Water

*Limited by O-Ring compound

Values and ratings in this catalog are based on industry standard applications operating under ideal conditions. The customer should assume responsiblity for validation testing of performance and suitabilty of Eclipse Engineering products. Eclipse Engineering accepts no liabilty for the accuracy and applicabilty of provided information.

ORDERING EXAMPLE:

EQS2-P-03000-ET010-N


EQS2	= Seal Ring Series
P	= Piston
03000	= Bore Diameter X 1000 (inches)
ET010	= Material Code
N	= O-Ring Material Code

CROSS SECTION SERIES	ØA BORE H9	ØB GROOVE h9	GROOVE WIDTH +0.008/ -0.000	E CLEARANCE (MAX)
CROSS SECTION SERIES	ØA BORE H9	ØB GROOVE h9	GROOVE WIDTH +0.008/ -0.000	2500 PSI	3500 PSI
EQS1	1.000 – 3.000	ØA – 0.394	0.248	0.024	0.018
EQS2	3.000 – 5.000	ØA – 0.512	0.326	0.026	0.020
EQS3	5.000 – 12.000	ØA – 0.708	0.484	0.028	0.022
EQS4	12.000 – 26.000	ØA – 1.220	0.642	0.032	0.026

EQS STANDARD SEAL MATERIALS

ECLIPSE MATERIAL CODE	DESCRIPTION	COLOR	APPLICATIONS
ET010	Bronze filled PTFE	Brown	Standard material for hydraulics
ET020	Carbon Fiber filled PTFE	Black	Abrasive, heavy wear, extended life requirements
ET014	Polyimide filled PTFE	Orange/Brown	High sealabilty, soft hardware

See Eclipse Material Guide for complete list of available materials.

O-RING MATERIALS

ECLIPSE MATERIAL CODE	DESCRIPTION	HARDNESS SHORE A	TEMPERATURE RANGE
0 or blank	Seal provided without O-Ring	–	–
N	Nitrile (NBR)	70	-30°F to 250°F [-34°C to 121°C]
F	Fluorocarbon (FKM)	75	-15°F to 400°F [-26°C to 205°C]
E	Ethylene Propylene (EPDM)	70	-70°F to 250°F [-57°C to 121°C]

Full range of elastomer compounds available for specialty applications.

STANDARD PART NUMBERS

100 SERIES:

PART NUMBER	BORE Ø +0.002/ -0.000	GROOVE Ø +0.000/ -0.002	GROOVE WIDTH	DYNAMIC ELASTOMER DASH SIZE	O-RING DASH SIZE
EQS1-P-01500	1.500	1.106	0.248/0.256	-028	2-121
EQS1-P-01563	1.563	1.169		-028	2-122
EQS1-P-01575	1.575 (40MM)	1.181		-028	2-122
EQS1-P-01625	1.625	1.231		-029	2-123
EQS1-P-01688	1.688	1.294		-029	2-124
EQS1-P-01750	1.750	1.356		-030	2-125
EQS1-P-01813	1.813	1.419		-030	2-126
EQS1-P-01875	1.875	1.481		-031	2-127
EQS1-P-01938	1.938	1.544		-031	2-128
EQS1-P-01969	1.969 (50MM)	1.575		-031	2-128
EQS1-P-02000	2.000	1.606		-032	2-129
EQS1-P-02125	2.125	1.731		-033	2-131

PART NUMBER	BORE Ø +0.002/ -0.000	GROOVE Ø +0.000/ -0.002	GROOVE WIDTH	DYNAMIC ELASTOMER DASH SIZE	O-RING DASH SIZE
EQS1-P-02250	2.250	1.856	0.248/0.256	-034	2-133
EQS1-P-02362	2.362 (60MM)	1.968		-035	2-135
EQS1-P-02375	2.375	1.981		-035	2-135
EQS1-P-02500	2.500	2.106		-036	2-137
EQS1-P-02625	2.625	2.231		-037	2-139
EQS1-P-02750	2.750	2.356		-038	2-141
EQS1-P-02756	2.756 (70MM)	2.362		-038	2-141
EQS1-P-02875	2.875	2.481		-039	2-143

Consult Eclipse Engineering for all custom or unlisted sizes.

200 SERIES:

PART NUMBER	BORE Ø +0.003/ -0.000	GROOVE Ø +0.000/ -0.003	GROOVE WIDTH	DYNAMIC ELASTOMER DASH SIZE	O-RING DASH SIZE
EQS2-P-03000	3.000	2.488	0.326/0.334	-149	2-229
EQS2-P-03125	3.125	2.613		-150	2-230
EQS2-P-03150	3.150 (80MM)	2.638		-150	2-230
EQS2-P-03250	3.250	2.738		-151	2-231
EQS2-P-03375	3.375	2.863		-151	2-232
EQS2-P-03500	3.500	2.988		-152	2-233
EQS2-P-03543	3.543 (90MM)	3.031		-152	2-233
EQS2-P-03625	3.625	3.113		-152	2-234
EQS2-P-03750	3.750	3.238		-153	2-235
EQS2-P-03875	3.875	3.363		-153	2-236
EQS2-P-03973	3.973 (100MM)	3.461		-154	2-237
EQS2-P-04000	4.000	3.488		-154	2-237
EQS2-P-04125	4.125	3.613		-154	2-238
EQS2-P-04250	4.250	3.738		-155	2-239
EQS2-P-04331	4.331 (110MM)	3.819		-155	2-240

PART NUMBER	BORE Ø +0.003/ -0.000	GROOVE Ø +0.000/ -0.003	GROOVE WIDTH	DYNAMIC ELASTOMER DASH SIZE	O-RING DASH SIZE
EQS2-P-04375	4.375	3.863	0.326/0.334	-155	2-240
EQS2-P-04500	4.500	3.988		-156	2-241
EQS2-P-04625	4.625	4.113		-156	2-242
EQS2-P-04724	4.724 (120MM)	4.212		-157	2-242
EQS2-P-04750	4.750	4.238		-157	2-243
EQS2-P-04875	4.875	4.363		-157	2-244

Consult Eclipse Engineering for all custom or unlisted sizes.

300 SERIES:

PART NUMBER	BORE Ø +0.004/ -0.000	GROOVE Ø +0.000/ -0.004	GROOVE WIDTH	DYNAMIC ELASTOMER DASH SIZE	O-RING DASH SIZE
EQS3-P-05000	5.000	4.291	0.484/0.492	-248	2-346
EQS3-P-05118	5.118 (130MM)	4.410		-249	2-347
EQS3-P-05125	5.125	4.416		-249	2-347
EQS3-P-05250	5.250	4.541		-250	2-348
EQS3-P-05375	5.375	4.666		-251	2-349
EQS3-P-05500	5.500	4.791		-252	2-350
EQS3-P-05512	5.512 (140MM)	4.804		-252	2-350
EQS3-P-05625	5.625	4.916		-253	2-351
EQS3-P-05750	5.750	5.041		-254	2-352
EQS3-P-05875	5.875	5.166		-255	2-353
EQS3-P-06000	6.000	5.291		-256	2-354
EQS3-P-06250	6.250	5.541		-258	2-356
EQS3-P-06299	6.299 (160MM)	5.591		-258	2-356
EQS3-P-06500	6.500	5.791		-259	2-358
EQS3-P-06693	6.693 (170MM)	5.985		-260	2-360

PART NUMBER	BORE Ø +0.004/ -0.000	GROOVE Ø +0.000/ -0.004	GROOVE WIDTH	DYNAMIC ELASTOMER DASH SIZE	O-RING DASH SIZE
EQS3-P-06750	6.750	6.041	0.484/0.492	-260	2-360
EQS3-P-07000	7.000	6.291		-261	2-361
EQS3-P-07087	7.087 (180MM)	6.379		-262	2-362
EQS3-P-07250	7.250	6.541		-262	2-362
EQS3-P-07480	7.480 (190MM)	6.772		-263	2-363
EQS3-P-07500	7.500	6.791		-263	2-363
EQS3-P-07750	7.750	7.041		-264	2-364
EQS3-P-07874	7.874 (200MM)	7.166		-265	2-365
EQS3-P-08000	8.000	7.291		-265	2-365
EQS3-P-08250	8.250	7.541		-266	2-366
EQS3-P-08268	8.268 (210MM)	7.560		-266	2-366
EQS3-P-08500	8.500	7.791		-267	2-367
EQS3-P-08661	8.661 (220MM)	7.953		-268	2-368
EQS3-P-08750	8.750	8.041		-268	2-368
EQS3-P-09000	9.000	8.291		-269	2-369

Consult Eclipse Engineering for all custom or unlisted sizes.

300 SERIES CONTINUED:

PART NUMBER	BORE Ø +0.004/ -0.000	GROOVE Ø +0.000/ -0.004	GROOVE WIDTH	DYNAMIC ELASTOMER DASH SIZE	O-RING DASH SIZE
EQS3-P-09250	9.250	8.541	0.484/0.492	-270	2-370
EQS3-P-09252	9.252 (235MM)	8.544		-270	2-370
EQS3-P-09500	9.500	8.791		-271	2-371
EQS3-P-09750	9.750	9.041		-272	2-372
EQS3-P-09843	9.843 (250MM)	9.135		-273	2-373
EQS3-P-10000	10.000	9.291		-273	2-373
EQS3-P-10433	10.433 (265MM)	9.725		-274	2-375
EQS3-P-10500	10.500	9.791		-274	2-375
EQS3-P-11000	11.000	10.291		-275	2-377
EQS3-P-11024	11.024 (280MM)	10.316		-275	2-377
EQS3-P-11500	11.500	10.791		-276	2-378

Consult Eclipse Engineering for all custom or unlisted sizes.

400 SERIES:

PART NUMBER	BORE Ø +0.006/ -0.000	GROOVE Ø +0.000/ -0.006	GROOVE WIDTH	DYNAMIC ELASTOMER DASH SIZE	O-RING DASH SIZE
EQS4-P-12000	12.000	10.780	0.642/0.650	-380	2-450
EQS4-P-12500	12.500	11.280		-381	2-451
EQS4-P-13000	13.000	11.780		-381	2-451
EQS4-P-13500	13.500	12.280		-382	2-453
EQS4-P-13780	13.780 (350MM)	12.560		-382	2-454
EQS4-P-14000	14.000	12.780		-382	2-454
EQS4-P-14500	14.500	13.280		-383	2-455
EQS4-P-14764	14.764 (375MM)	13.544		-383	2-456
EQS4-P-15000	15.000	13.780		-383	2-456
EQS4-P-15500	15.500	14.280		-384	2-457
EQS4-P-15748	15.748 (400MM)	14.528		-384	2-457
EQS4-P-16000	16.000	14.780		-384	2-458
EQS4-P-16500	16.500	15.280		-385	2-459
EQS4-P-16732	16.732 (425MM)	15.512		-385	2-459
EQS4-P-17000	17.000	15.780		-385	2-460

PART NUMBER	BORE Ø +0.006/ -0.000	GROOVE Ø +0.000/ -0.006	GROOVE WIDTH	DYNAMIC ELASTOMER DASH SIZE	O-RING DASH SIZE
EQS4-P-17500	17.500	16.280	0.642/0.650	-386	2-461
EQS4-P-17717	17.717 (450MM)	16.497		-386	2-461
EQS4-P-18000	18.000	16.780		-386	2-462
EQS4-P-18500	18.500	17.280		-387	2-463
EQS4-P-19000	19.000	17.780		-387	2-464
EQS4-P-19500	19.500	18.280		-388	2-465
EQS4-P-19685	19.685 (500MM)	18.465		-388	2-465
EQS4-P-20000	20.000	18.780		-388	2-466

Consult Eclipse Engineering for all custom or unlisted sizes.

HARDWARE DETAILS

CROSS SECTION SERIES	MIN BORE Ø FOR SOLID GLAND INSTALLATION	R RADIUS (MAX)	C LEAD-IN CHAMFER (MIN)
EQS1	1.500	0.015	0.120
EQS2	3.000	0.025	0.150
EQS3	5.000	0.035	0.180
EQS4	12.000	0.035	0.200

Consult Eclipse Engineering for application/material specific hardware design requirements.

"We started Eclipse with the premise that if we could solve enough of our customers problems they would continue to come back to us for solutions regardless of the type of products we offered."

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ECLIPSE EQS – Q PISTON SEAL

Interested in this product?

Typical Range of Application

Pressure

Temperature*

Velocity

Media

ORDERING EXAMPLE:

EQS2-P-03000-ET010-N

EQS STANDARD SEAL MATERIALS

O-RING MATERIALS

STANDARD PART NUMBERS

100 SERIES:

200 SERIES:

300 SERIES:

300 SERIES CONTINUED:

4﻿00 SERIES:

HARDWARE DETAILS

"We started Eclipse with the premise that if we could solve enough of our customers problems they would continue to come back to us for solutions regardless of the type of products we offered."

400 SERIES: