1、flIL-R-Z5788/lA 53 m 77777Ob 0105bZL 3 m / c-s3-Q3 MIL-R-25988/1A(USAF) 10 July 1975 SUPERSEDING MIL-R-25988/1 (USAE) 27 January 1971 MILITARY SPECIFICATION SHEET RUBBER, FLUOROSILICONE ELASTOMER, OIL-AND-FUEL-RESISTANT, O-RINGS, CUSS 1, GRADE 70 This specification is approved for use by all Departm
2、ents and Agencies of the Department of Defense. The complete requirements for procuring the O-ring described herein shall consist of this document and the issue in efgect of Specification MIL-R-25988(USAF) Purpose. The purpose of this specification sheet is to set up a standardized part numbering sy
3、stem for O-rings procured to MIL-R-25988, Class 1, Grade 70. Intended Use. These O-rings are recommended for use in packing glandS.as specified in MIL-G-5514. Part Numbers. When this document is used for procurement of O-rings, part numbers shall consist of the following: 1. The letter M and the spe
4、cification sheet.number. 2. A dash followed by the appropriate dash number from ,- Table I or Table II Example 1 M25988/1-178 Example 2 M25988/1-440 c THIS DOCUMENT CONTAINS PAGES. if Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-25988/LA 53
5、m 7797706 OL05b22 5 m I Table I O-Ring Sizes DASH NO. o01 002 003 O 04 005 006 007 008 O09 o10 o11 o1 2 O1 3 014 015 O1 6 017 018 o19 o 20 021 022 923 O 24 025 026 027 028 029 030 031 032 033 034 035 036 037 038 039 040 ,050 .O60 .O70 ACTUAL S I ZE .O40 .O29 W. ID. f.003 - +.O03 - V 1 .O42 .O56 .O70
6、 .lo1 .114 .145 .176 .208 .239 .301 .364 ,426 .489 .551 .614 ,676 .739 .801 .864 ,926 .989 1.051 1 J14 1.176 1.239 1.301 1.364 1.489 1.614 1.739 1.864 1.989 2.114 2.239 2.364 2.489 2.614 2.739 2.864 +.o04 - 4 +. 005 -i +. 007 +.o09 - 1 +. O10 - L 1 4 +.o11 - +.913 - +.O15 - +_.Cf18 i i +.o20 -L 2 DA
7、SH NO. 041 042 04 3 944 045 046 047 048 049 050 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 .lo3 1 1 t.( - 3 3.239 3.489 3.739 3.989 4.239 4.489 4.739 4.989 5.239 .O49 .O81 .112 .143 .174 .206 .237 .299 .362 .424 .487 .549 .612
8、.674 .737 .799 .862 .924 .987 1.049 1 .L12 1 J74 1.237 1.299 1.362 1.424 1.487 1.549 1.612 +.o24 - 4 L 1 +. 027 +.O30 - -L t. 037 - +.O05 +.o09 +. I O07 - I/ t.O1O - I i +.o12 - +.O15 - .J/ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DASH NO. 131
9、 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 15 6 157 158 159 160 161 162 163 164 165 166 167 168 169 170 Table I (Cont) O-Ring Sizes ACTUAL SIZE W 4 ID .lo3 1 1.674 1.737 1.799 1.862 1.925 1.987 2.050 2.112 2 J75 2.237 2.300 2.362 2,425 2.487 2.55
10、0 2.612 2.675 2.737 2.800 2.862 2.987 3.237 3.487 3.737 3.987 4.237 4.487 4.737 4.987 5.237 5.487 5.737 5,987 6.237 6.487 6.737 6.987 7.237 7.487 7 .737 +.o15 *L 2.017 1 L +.o20 - +.o22 L +.O24 -4 1 +. 028 +.O30 - -4 +.O35 1 - +. 040 1 -t. 045 3 DASH- NO. 171 172 173 174 175 176 177 178 201 202 20 3
11、 204 205 206 207 208 209 210 211 21 2 213 214 215 216 217 218 219 2 20 2 21 222 223 2 24 225 226 227 228 229 230 231 .139 1 1 ACTUAL SIZE .139 1. t. 004 1 - f. 004 7.987 8.237 8.487 8.737 8.987 9 237 9.487 9.737 .171 .234 .296 .359 ,421 .484 .546 ,609 .671 .734 .796 .859 .921 984 1 .O46 l. 109 1 .L7
12、1 1.234 1.296 1,359 1.421 1.484 1.609 1.734 1.855 1.984 2.105 2; 234 2.355 2.484 2.605 1 +_. 045 +.050 - J J +.055 - - f.005 1 1 .L +.007 7,009 -1 - +. O10 +.012 - +.015 - L -L +.018 +.020 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-25988
13、/1A(USA.F) I Table I (Cont) O-Ring Sizes DASH- NO. 232 233 234 235 236 237 238 239 ,240 24 1 24 2 243 244 24 5 24 6 248 24 9 250 251 25 2 253 254 255 25 6 25 7 258 25 9 260 261 262 263 264 265 266 267 268 270 271 27 2 247 269 . ACTUAL SIZE W .139 +.O04 - IC 2.734 2.859 2.984 3 .lo9 3.234 3.359 3.484
14、 3.609 3.734 3.859 3.984 4.109 4.234 4.359 4.484 4.609 4.734 4.859 4.984 5.109 5.234 5.359 5.484 5.609 5.734 5.859 5.984 6.234 6.484 6.734 6.984 7.234 7.484 7.734 7.984 8.234 8.484 8.734 8.984 9.234 9.484 t.024 f. 028 I - 1 L - t. 030 t.035 - t-. 040 I - 1 1 1 t. 045 t.050 t. 055 -L 4 274 275 27 6 2
15、77 27 8 279 280 281 28 2 28 3 284 309 310 311 312 313 314 315 316 31 7 318 319 3 20 321 322 323 3 24 325 326 327 328 329 330 331 332 333 334 335 336 - ,210 . L/ I_ t. 004 t.005 - 1 4 9.984 LO .484 LO. 984 11.484 11.984 12.984 L3.984 14.984 15.955 16.955 17.955 .412 .475 .537 .600 ,662 .725 .787 .850
16、 .912 .975 1.037 1.100 1.162 1.225 1.287 1.350 1.475 1.600 1.725 1.850 1.975 2.100 2.225 2.350 2,475 2,600 2.725 2.850 c +.ass J/ t.065 i f.075 7.080 +.O85 f.005 f.007 -+ -J/ 7.009 L t. 010 t.O1O 11 L -.L t.012 - t.015 - Jl J +.O18 - +.o20 - Provided by IHSNot for ResaleNo reproduction or networking
17、 permitted without license from IHS-,-,-DASH NO. 337 338 339 340 34 1 342 343 344 345 346 347 348 349 350 351 35 2 353 354 355 356 357 358 359 360 361 362 363 3 64 365 366 367 368 369 370 37 1 37 2 37 3 374 375 376 377 c - “ 1 MIL-R-25988/1A(USAE) Table I (Cont) O-Ring Sizes - ACTUAL SIZE W Ifr .210
18、 L t.005 - 2.975 3.100 3.225 3.350 3.475 3.600 3.725 3 .850 3.975 4.100 4.225 4 350 4.475 4.600 4.725 4.850 4.975 5.100 5.225 5.350 5.475 5.600 5.725 5.850 5.975 6.225 6.475 6,725 6.975 7,225 7.475 7.725 7.975 8.225 8.475 8.725 8.975 9.225 9.475 9.725 9.975 +.o24 - 1 IL 1 +.O28 - +. 030 - +.O37 - -
19、+. 040 I 1 L 1 -L +. - 045 +.O50 - +.O55 5 DASH- NO. 378 37 9 380 381 382 383 384 385 38 6 387 388 389 390 391 392 39 3 3 94 395 425 426 4 27 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 44 6 1 ACTUAL SIZE W T- J .275 k.005 v t.006 - J 10.475 10.975 11.475 11.975 12.975 13
20、.975 14.975 15.955 16,955 17.955 18.955 19.955 20.955 21.955 22.940 23 940 24.940 25 940 4.475 4.600 4.725 4.850 4.975 5 .lo0 5.225 5.350 5.475 5.600 5.725 5.850 5.975 6.225 6.475 6.725 6.975 7.225 7.475 7.725 7.975 8.475 Yo J f. .k 75 f.065 t.070 - t.080 F.085 F.O95 t. 100 7.105 T.115 F.o90 -4 +.no
21、 T. 120 -3. +.O33 - 1 +. 037 -1 + 040 -1 1 t.045 - f.055 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-r MIL-R-Z5788/lA 53 7377906 0305626 2 MIL-R-25988/1A (USAJ?) DASH- - NO. 447 448 449 45 O 45 1 45 2 45 3 454 455 45 6 457 45 8 459 460 461 462 46
22、3 464 465 466 467 468 469 47 O 47 1 472 47 3 474 47 5 “ . 1 1 8.975 9.475 9.975 10.475 10.975 11.475 11.975 12.475 12.975 13.475 13.975 14.475 14.975 15.475 15.955 16.455 16.955 17.455 17.955 18.455 18.955 19.455 19.955 20.955 21.955 22.940 23.940 24.940 25.940 Table I (Cont) O-Ring Sizes +. - 055 1
23、 +.O60 L +.O70 - i +.O75 +.O80 - r. 085 - .L .J +.o90 - j, -.L T.110 - 7.120 +.O95 +.loo +. 105 +.115 - 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-2578B/LA 53 7977706 0305627 4 - Table II STRAIGHT THREAD TUBE FITTING BOSS GASKETS DASH NO
24、. 901 902 903 904 905 906 907 908 909 910 911 912 91 3 9 14 916 918 9 20 9 24 9 28 932 TUBE .O94 .125 .188 .250 .312 .375 .438 .500 .562 .625 .688 .750 .812 .875 1 .o00 1 J25 1.250 1.500 1.750 2.000 IUTSIDE DIAMETER Cus t od ian : Air Force - 11 W CROS S - .O56 .O64 .O7 2 .O78 .O82 .O87 .O97 .116 J
25、& L 1 .118 S1 L ECTION +,O03 -1 - +. 004 T “ 1 i .185 .239 .301 .351 ,414 .468 .530 .644 .706 .755 .863 .924 .986 l. 047 1.171 l. 355 1.475 1.720 2 .O90 2.337 Preparing activity : Air Force - 11 +. 007 +.009 - 1 +.010 - 1 +.012 7.014 - +. 018 -P -+ Project Number: 5330-FO40 * U. S. GOVERNMENT PRINTING OFFICE 1975 -6-766/0721 7 “ - “- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
