ECLIPSE EHS – HELICAL SPRING ENERGIZED PISTON SEAL
Eclipse Helical Spring Seals are comprised of a wound ribbon metal spring installed in a polymer jacket. This helical shape spring affords a relatively high load versus deflection range resulting in a seal product that can provide very tight sealing. As a highly loaded product, Helical Spring Seals should be considered when dynamics are very slow or static. Examples are in stems seals and in cryogenic valves where additional force is required to overcome thermal effects.
Typical Range of Application
Pressure
Vacuum to 3,000 psi
[0 to 200 bar]
Temperature*
-320°F to 450°F
[-195°C to 230°C]
Ratings will vary based on materials and operating conditions
*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.
STANDARD ORDERING EXAMPLE:
EHS-P-234-LW-ET000-H-P
| EHS | = Seal Series | |
| P | = Piston | |
| 234 | = Dash Number | |
| LW | = Lip Style | |
| ET000 | = Seal Material Code | |
| H | = Spring Load H – Heavy | |
| P | = Spring Material P – 17-7 PH Stainless Steel E – Elgiloy® H – Hastelloy® |
NON-STANDARD ORDERING EXAMPLE:
EHS-P-C-02953-LW-ET000-H-P
C
= Nominal Cross-Section
A = 1/16 in. (000 Series)
B = 3/32 in. (100 Series)
C = 1/8 in. (200 Series)
D = 3/16 in. (300 Series)
E = 1/4 in. (400 Series)
02953
= Bore Diameter in 1000ths
Example: 02953 = Ø2.953 [75MM] Bore Diameter
EHS STANDARD SEAL MATERIALS
| ECLIPSE MATERIAL CODE | DESCRIPTION | COLOR | APPLICATIONS |
|---|---|---|---|
| ET000 | Virgin PTFE | White | Light Duty / Static / Cryogenics |
| ET006 | Carbon filled PTFE | Black | General Purpose |
| EU000 | Virgin UHMWPE | Translucent White | Viscous Media / Water |
| ET014 | Polyimide filled PTFE | Orange/Brown | High Sealabilty / Soft Hardware |
See Eclipse Material Guide for complete list of available materials.
EHS STANDARD SPRING MATERIALS
| ECLIPSE MATERIAL CODE | SPRING MATERIAL | APPLICATION |
|---|---|---|
| P | 17-7 PH Stainless Steel | General purpose, standard spring material |
| E | Elgiloy® | Improved performance and corrosion resistance; NACE approved |
| H | Hastelloy® C276 | Maximum chemical/corrosion resistance |
STANDARD DASH NUMBERS
000 SERIES:
| GLAND TOLERANCES | ||
|---|---|---|
| SEAL ID | ØA | ØB |
| 0.125 to 0.374 | +0.000
-0.001 |
+0.001
-0.000 |
| 0.375 to 2.999 | +0.000
-0.002 |
+0.002
-0.000 |
| 3.000 to 7.999 | +0.000
-0.003 |
+0.003
-0.000 |
| 8.000 and up | +0.000
-0.004 |
+0.004
-0.000 |
| 000 SERIES MAXIMUM EXTRUSION GAP (E), AT 70° F | |||
|---|---|---|---|
| 300 psi | 1500 psi | 3000 psi | 6000 psi |
| 0.008 | 0.004 | 0.003 | 0.002 |
Consult Eclipse Engineering for all custom or unlisted sizes.
000 SERIES STANDARD DASH NUMBERS:
| DASH # | A | B |
|---|---|---|
| 006 | 0.125 | 0.250 |
| 007 | 0.156 | 0.281 |
| 008 | 0.187 | 0.312 |
| 009 | 0.218 | 0.343 |
| 010 | 0.250 | 0.375 |
| 011 | 0.312 | 0.437 |
| 012 | 0.375 | 0.500 |
| 013 | 0.437 | 0.562 |
| 014 | 0.500 | 0.625 |
| 015 | 0.562 | 0.687 |
| 016 | 0.625 | 0.750 |
| 017 | 0.687 | 0.812 |
| 018 | 0.750 | 0.875 |
| 019 | 0.812 | 0.937 |
| 020 | 0.875 | 1.000 |
| 021 | 0.937 | 1.062 |
| 022 | 1.000 | 1.125 |
| 023 | 1.062 | 1.187 |
| 024 | 1.125 | 1.250 |
| 025 | 1.187 | 1.312 |
| 026 | 1.250 | 1.375 |
| 027 | 1.312 | 1.437 |
| 028 | 1.375 | 1.500 |
| 029 | 1.500 | 1.625 |
| 030 | 1.625 | 1.750 |
| 031 | 1.750 | 1.875 |
| 032 | 1.875 | 2.000 |
| 033 | 2.000 | 2.125 |
| 034 | 2.125 | 2.250 |
| 035 | 2.250 | 2.375 |
| 036 | 2.375 | 2.500 |
| 037 | 2.500 | 2.625 |
| 038 | 2.625 | 2.750 |
| 039 | 2.750 | 2.875 |
| 040 | 2.875 | 3.000 |
| 041 | 3.000 | 3.125 |
| 042 | 3.250 | 3.375 |
| 043 | 3.500 | 3.625 |
| 044 | 3.750 | 3.875 |
| 045 | 4.000 | 4.125 |
Consult Eclipse Engineering for all custom or unlisted sizes.
100 SERIES STANDARD DASH NUMBERS
| GLAND TOLERANCES | ||
|---|---|---|
| SEAL ID | ØA | ØB |
| 0.125 to 0.374 | +0.000
-0.001 |
+0.001
-0.000 |
| 0.375 to 2.999 | +0.000
-0.002 |
+0.002
-0.000 |
| 3.000 to 7.999 | +0.000
-0.003 |
+0.003
-0.000 |
| 8.000 and up | +0.000
-0.004 |
+0.004
-0.000 |
| 100 SERIES MAXIMUM EXTRUSION GAP (E), AT 70° F | |||
|---|---|---|---|
| 300 psi | 1500 psi | 3000 psi | 6000 psi |
| 0.010 | 0.006 | 0.004 | 0.003 |
Consult Eclipse Engineering for all custom or unlisted sizes.
100 SERIES STANDARD DASH NUMBERS:
| DASH # | A | B |
|---|---|---|
| 106 | 0.187 | 0.375 |
| 107 | 0.219 | 0.406 |
| 108 | 0.250 | 0.437 |
| 109 | 0.312 | 0.500 |
| 110 | 0.375 | 0.562 |
| 111 | 0.437 | 0.625 |
| 112 | 0.500 | 0.687 |
| 113 | 0.562 | 0.750 |
| 114 | 0.625 | 0.812 |
| 115 | 0.687 | 0.875 |
| 116 | 0.750 | 0.937 |
| 117 | 0.812 | 1.000 |
| 118 | 0.875 | 1.062 |
| 119 | 0.937 | 1.125 |
| 120 | 1.000 | 1.187 |
| 121 | 1.062 | 1.250 |
| 122 | 1.125 | 1.312 |
| 123 | 1.187 | 1.375 |
| 124 | 1.250 | 1.437 |
| 125 | 1.312 | 1.500 |
| 126 | 1.375 | 1.562 |
| 127 | 1.437 | 1.625 |
| 128 | 1.500 | 1.687 |
| 129 | 1.562 | 1.750 |
| 130 | 1.625 | 1.812 |
| 131 | 1.687 | 1.875 |
| 132 | 1.750 | 1.937 |
| 133 | 1.812 | 2.000 |
| 134 | 1.875 | 2.062 |
| 135 | 1.937 | 2.125 |
| 136 | 2.000 | 2.187 |
| 137 | 2.062 | 2.250 |
| 138 | 2.125 | 2.312 |
| 139 | 2.187 | 2.375 |
| 140 | 2.250 | 2.437 |
| 141 | 2.312 | 2.500 |
| 142 | 2.375 | 2.562 |
| 143 | 2.437 | 2.625 |
| 144 | 2.500 | 2.687 |
| 145 | 2.562 | 2.750 |
| 146 | 2.625 | 2.812 |
| 147 | 2.687 | 2.875 |
| 148 | 2.750 | 2.937 |
| 149 | 2.812 | 3.000 |
| 150 | 2.875 | 3.062 |
| 151 | 3.000 | 3.187 |
| 152 | 3.250 | 3.437 |
| 153 | 3.500 | 3.687 |
| 154 | 3.750 | 3.937 |
| 155 | 4.000 | 4.187 |
| 156 | 4.250 | 4.437 |
| 157 | 4.500 | 4.687 |
| 158 | 4.750 | 4.937 |
| 159 | 5.000 | 5.187 |
| 160 | 5.250 | 5.437 |
| 161 | 5.500 | 5.687 |
Consult Eclipse Engineering for all custom or unlisted sizes.
200 SERIES STANDARD DASH NUMBERS
| GLAND TOLERANCES | ||
|---|---|---|
| SEAL ID | ØA | ØB |
| 0.125 to 0.374 | +0.000
-0.001 |
+0.001
-0.000 |
| 0.375 to 2.999 | +0.000
-0.002 |
+0.002
-0.000 |
| 3.000 to 7.999 | +0.000
-0.003 |
+0.003
-0.000 |
| 8.000 and up | +0.000
-0.004 |
+0.004
-0.000 |
| 200 SERIES MAXIMUM EXTRUSION GAP (E), AT 70° F | |||
|---|---|---|---|
| 300 psi | 1500 psi | 3000 psi | 6000 psi |
| 0.014 | 0.008 | 0.006 | 0.003 |
Consult Eclipse Engineering for all custom or unlisted sizes.
200 SERIES STANDARD DASH NUMBERS:
| DASH # | A | B |
|---|---|---|
| 202 | 0.250 | 0.500 |
| 204 | 0.375 | 0.625 |
| 206 | 0.500 | 0.750 |
| 208 | 0.625 | 0.875 |
| 209 | 0.687 | 0.937 |
| 210 | 0.750 | 1.000 |
| 211 | 0.812 | 1.062 |
| 212 | 0.875 | 1.125 |
| 213 | 0.937 | 1.187 |
| 214 | 1.000 | 1.250 |
| 215 | 1.062 | 1.312 |
| 216 | 1.125 | 1.375 |
| 217 | 1.187 | 1.437 |
| 218 | 1.250 | 1.500 |
| 219 | 1.312 | 1.562 |
| 220 | 1.375 | 1.625 |
| 221 | 1.437 | 1.687 |
| 222 | 1.500 | 1.750 |
| 223 | 1.625 | 1.875 |
| 224 | 1.750 | 2.000 |
| 225 | 1.875 | 2.125 |
| 226 | 2.000 | 2.250 |
| 227 | 2.125 | 2.375 |
| 228 | 2.250 | 2.500 |
| 229 | 2.375 | 2.625 |
| 230 | 2.500 | 2.750 |
| 231 | 2.625 | 2.875 |
| 232 | 2.750 | 3.000 |
| 233 | 2.875 | 3.125 |
| 234 | 3.000 | 3.250 |
| 235 | 3.125 | 3.375 |
| 236 | 3.250 | 3.500 |
| 237 | 3.375 | 3.625 |
| 238 | 3.500 | 3.750 |
| 239 | 3.625 | 3.875 |
| 240 | 3.750 | 4.000 |
| 241 | 3.875 | 4.125 |
| 242 | 4.000 | 4.250 |
| 243 | 4.125 | 4.375 |
| 244 | 4.250 | 4.500 |
| 245 | 4.375 | 4.625 |
| 246 | 4.500 | 4.750 |
| 247 | 4.625 | 4.875 |
| 248 | 4.750 | 5.000 |
| 249 | 4.875 | 5.125 |
| 250 | 5.000 | 5.250 |
| 252 | 5.250 | 5.500 |
| 254 | 5.500 | 5.750 |
| 256 | 5.750 | 6.000 |
| 258 | 6.000 | 6.250 |
| 260 | 6.500 | 6.750 |
| 262 | 7.000 | 7.250 |
| 264 | 7.500 | 7.750 |
| 266 | 8.000 | 8.250 |
| 268 | 8.500 | 8.750 |
| 270 | 9.000 | 9.250 |
Consult Eclipse Engineering for all custom or unlisted sizes.
300 SERIES STANDARD DASH NUMBERS
| GLAND TOLERANCES | ||
|---|---|---|
| SEAL ID | ØA | ØB |
| 0.125 to 0.374 | +0.000
-0.001 |
+0.001
-0.000 |
| 0.375 to 2.999 | +0.000
-0.002 |
+0.002
-0.000 |
| 3.000 to 7.999 | +0.000
-0.003 |
+0.003
-0.000 |
| 8.000 and up | +0.000
-0.004 |
+0.004
-0.000 |
| 300 SERIES MAXIMUM EXTRUSION GAP (E), AT 70° F | |||
|---|---|---|---|
| 300 psi | 1500 psi | 3000 psi | 6000 psi |
| 0.020 | 0.010 | 0.008 | 0.004 |
Consult Eclipse Engineering for all custom or unlisted sizes.
300 SERIES STANDARD DASH NUMBERS
| DASH # | A | B |
|---|---|---|
| 316 | 0.875 | 1.250 |
| 317 | 0.937 | 1.312 |
| 318 | 1.000 | 1.375 |
| 319 | 1.062 | 1.437 |
| 320 | 1.125 | 1.500 |
| 321 | 1.187 | 1.562 |
| 322 | 1.250 | 1.625 |
| 323 | 1.312 | 1.687 |
| 324 | 1.375 | 1.750 |
| 325 | 1.500 | 1.875 |
| 326 | 1.625 | 2.000 |
| 327 | 1.750 | 2.125 |
| 328 | 1.875 | 2.250 |
| 329 | 2.000 | 2.375 |
| 330 | 2.125 | 2.500 |
| 331 | 2.250 | 2.625 |
| 332 | 2.375 | 2.750 |
| 333 | 2.500 | 2.875 |
| 334 | 2.625 | 3.000 |
| 335 | 2.750 | 3.125 |
| 336 | 2.875 | 3.250 |
| 337 | 3.000 | 3.375 |
| 338 | 3.125 | 3.500 |
| 339 | 3.250 | 3.625 |
| 340 | 3.375 | 3.750 |
| 341 | 3.500 | 3.875 |
| 342 | 3.625 | 4.000 |
| 343 | 3.750 | 4.125 |
| 344 | 3.875 | 4.250 |
| 345 | 4.000 | 4.375 |
| 346 | 4.125 | 4.500 |
| 347 | 4.250 | 4.625 |
| 348 | 4.375 | 4.750 |
| 349 | 4.500 | 4.875 |
| 350 | 4.625 | 5.000 |
| 351 | 4.750 | 5.125 |
| 352 | 4.875 | 5.250 |
| 353 | 5.000 | 5.375 |
| 354 | 5.125 | 5.500 |
| 355 | 5.250 | 5.625 |
| 356 | 5.375 | 5.750 |
| 357 | 5.500 | 5.875 |
| 358 | 5.625 | 6.000 |
| 359 | 5.750 | 6.125 |
| 360 | 5.875 | 6.250 |
| 361 | 6.000 | 6.375 |
| 362 | 6.250 | 6.625 |
| 363 | 6.500 | 6.875 |
| 365 | 7.000 | 7.375 |
| 367 | 7.500 | 7.875 |
| 369 | 8.000 | 8.375 |
| 371 | 8.500 | 8.875 |
| 373 | 9.000 | 9.375 |
| 375 | 9.500 | 9.875 |
| 377 | 10.000 | 10.375 |
| 378 | 10.500 | 10.875 |
Consult Eclipse Engineering for all custom or unlisted sizes.
400 SERIES STANDARD DASH NUMBERS
| GLAND TOLERANCES | ||
|---|---|---|
| SEAL ID | ØA | ØB |
| 0.125 to 0.374 | +0.000
-0.001 |
+0.001
-0.000 |
| 0.375 to 2.999 | +0.000
-0.002 |
+0.002
-0.000 |
| 3.000 to 7.999 | +0.000
-0.003 |
+0.003
-0.000 |
| 8.000 and up | +0.000
-0.004 |
+0.004
-0.000 |
| 400 SERIES MAXIMUM EXTRUSION GAP (E), AT 70° F | |||
|---|---|---|---|
| 300 psi | 1500 psi | 3000 psi | 6000 psi |
| 0.024 | 0.012 | 0.010 | 0.005 |
Consult Eclipse Engineering for all custom or unlisted sizes.
400 SERIES STANDARD DASH NUMBERS:
| DASH # | A | B |
|---|---|---|
| 401 | 1.500 | 2.000 |
| 402 | 1.625 | 2.125 |
| 403 | 1.750 | 2.250 |
| 404 | 1.875 | 2.375 |
| 405 | 2.000 | 2.500 |
| 406 | 2.125 | 2.625 |
| 407 | 2.250 | 2.750 |
| 408 | 2.375 | 2.875 |
| 409 | 2.500 | 3.000 |
| 410 | 2.625 | 3.125 |
| 411 | 2.750 | 3.250 |
| 412 | 2.875 | 3.375 |
| 413 | 3.000 | 3.500 |
| 414 | 3.125 | 3.625 |
| 415 | 3.250 | 3.750 |
| 416 | 3.375 | 3.875 |
| 417 | 3.500 | 4.000 |
| 418 | 3.625 | 4.125 |
| 419 | 3.750 | 4.250 |
| 420 | 3.875 | 4.375 |
| 421 | 4.000 | 4.500 |
| 422 | 4.125 | 4.625 |
| 423 | 4.250 | 4.750 |
| 424 | 4.375 | 4.875 |
| 425 | 4.500 | 5.000 |
| 426 | 4.625 | 5.125 |
| 427 | 4.750 | 5.250 |
| 428 | 4.875 | 5.375 |
| 429 | 5.000 | 5.500 |
| 430 | 5.125 | 5.625 |
| 431 | 5.250 | 5.750 |
| 432 | 5.375 | 5.875 |
| 433 | 5.500 | 6.000 |
| 434 | 5.625 | 6.125 |
| 435 | 5.750 | 6.250 |
| 436 | 5.875 | 6.375 |
| 437 | 6.000 | 6.500 |
| 438 | 6.250 | 6.750 |
| 439 | 6.500 | 7.000 |
| 440 | 6.750 | 7.250 |
| 441 | 7.000 | 7.500 |
| 442 | 7.250 | 7.750 |
| 443 | 7.500 | 8.000 |
| 444 | 7.750 | 8.250 |
| 445 | 8.000 | 8.500 |
| 446 | 8.500 | 9.000 |
| 447 | 9.000 | 9.500 |
| 448 | 9.500 | 10.000 |
| 449 | 10.000 | 10.500 |
| 450 | 10.500 | 11.000 |
| 451 | 11.000 | 11.500 |
| 452 | 11.500 | 12.000 |
| 454 | 12.500 | 13.000 |
| 456 | 13.500 | 14.000 |
| 458 | 14.500 | 15.000 |
| 460 | 15.500 | 16.000 |
Consult Eclipse Engineering for all custom or unlisted sizes.
HARDWARE DETAILS – SPLIT GLAND
| SERIES | R
RADIUS MAX |
C1
CHAMFER MIN |
C2
CHAMFER MIN |
|---|---|---|---|
| 000 | 0.010 | 0.010 | 0.031 |
| 100 | 0.015 | 0.015 | 0.050 |
| 200 | 0.015 | 0.015 | 0.062 |
| 300 | 0.015 | 0.020 | 0.093 |
| 400 | 0.020 | 0.020 | 0.125 |
Consult Eclipse Engineering for application/material specific design requirements or for use in solid or non-standard glands.
"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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