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Buna-N O-Rings

6 products

Buna-N O-Rings, sometimes called Nitrile O-Rings or NBR O-Rings, are resistant to oils, fuels, and greases – plus mild chemicals and water. Buna-N is a tough and durable material with good resistance to abrasion, compression, and tearing. It is a multipurpose material with broad ranging application coverage.

Product name Dash Size Cross Section - Actual Inner Diameter - Actual Outer Diameter - Actual Specifications Met Price
Buna-N O-Ring - 1.5mm Wide x 51mm ID - Pack of 25 1.5 mm 51 mm 54 mm
$9.53 / pack of 25
Buna-N O-Ring - 1.5mm Wide x 51mm ID - Pack of 25
Buna-N O-Ring - 1.5mm Wide x 51mm ID - Pack of 25
Brand USA Sealing
Item # AA0556
Mfr. Model # ZUSAH1.5X51
View Product Details
$9.53 / pack of 25

Expected to ship Wed. May 01
Buna-N O-Ring - 2mm Wide x 51mm ID - Pack of 25 2 mm 51 mm 55 mm
$8.73 / pack of 25
Buna-N O-Ring - 2mm Wide x 51mm ID - Pack of 25
Buna-N O-Ring - 2mm Wide x 51mm ID - Pack of 25
Brand USA Sealing
Item # AA0758
Mfr. Model # ZUSAH2X51
View Product Details
$8.73 / pack of 25

Expected to ship Tue. Jun 11
Buna-N O-Ring - 2.5mm Wide x 51mm ID - Pack of 25 2.5 mm 51 mm 56 mm
$10.73 / pack of 25
Buna-N O-Ring - 2.5mm Wide x 51mm ID - Pack of 25
Buna-N O-Ring - 2.5mm Wide x 51mm ID - Pack of 25
Brand USA Sealing
Item # AA0981
Mfr. Model # ZUSAH2.5X51
View Product Details
$10.73 / pack of 25

Expected to ship Wed. May 01
Buna-N O-Ring - 3mm Wide x 51mm ID - Pack of 25 3 mm 51 mm 57 mm
$11.30 / pack of 25
Buna-N O-Ring - 3mm Wide x 51mm ID - Pack of 25
Buna-N O-Ring - 3mm Wide x 51mm ID - Pack of 25
Brand USA Sealing
Item # AA1152
Mfr. Model # ZUSAH3X51
View Product Details
$11.30 / pack of 25

Expected to ship Wed. May 01
Buna-N O-Ring - 4mm Wide x 51mm ID - Pack of 25 4 mm 51 mm 59 mm
$13.48 / pack of 25
Buna-N O-Ring - 4mm Wide x 51mm ID - Pack of 25
Buna-N O-Ring - 4mm Wide x 51mm ID - Pack of 25
Brand USA Sealing
Item # AA1583
Mfr. Model # ZUSAH4X51
View Product Details
$13.48 / pack of 25

Expected to ship Tue. Jun 11
Buna-N O-Ring - 4.5mm Wide x 51mm ID - Pack of 2 4.5 mm 51 mm 60 mm
$6.50 / pack of 2
Buna-N O-Ring - 4.5mm Wide x 51mm ID - Pack of 2
Buna-N O-Ring - 4.5mm Wide x 51mm ID - Pack of 2
Brand USA Sealing
Item # AA1726
Mfr. Model # ZUSAH4.5X51
View Product Details
$6.50 / pack of 2

Expected to ship Tue. Jun 11
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  1. Inner Diameter - Actual
    51 mm
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Cross Section - Actual
  1. 1.5 mm 1 item
  2. 2 mm 1 item
  3. 2.5 mm 1 item
  4. 3 mm 1 item
  5. 4 mm 1 item
  6. 4.5 mm 1 item
Inner Diameter - Actual
  1. 0.056" 2 items
  2. 0.07" 2 items
  3. 0.174" 2 items
  4. 0.206" 2 items
  5. 0.208" 1 item
  6. 0.237" 2 items
  7. 0.239" 1 item
  8. 0.296" 1 item
  9. 0.299" 2 items
  10. 0.412" 2 items
  11. 0.421" 2 items
  12. 0.475" 2 items
  13. 0.484" 2 items
  14. 0.537" 2 items
  15. 0.546" 2 items
  16. 0.609" 2 items
  17. 0.612" 1 item
  18. 0.662" 2 items
  19. 0.671" 2 items
  20. 0.674" 1 item
  21. 0.676" 1 item
  22. 0.725" 2 items
  23. 0.787" 2 items
  24. 0.799" 1 item
  25. 0.864" 1 item
  26. 0.912" 2 items
  27. 0.926" 1 item
  28. 0.975" 2 items
  29. 0.989" 2 items
  30. 1.037" 2 items
  31. 1.049" 1 item
  32. 1.051" 2 items
  33. 1.109" 1 item
  34. 1.114" 1 item
  35. 1.162" 2 items
  36. 1.171" 1 item
  37. 1.174" 2 items
  38. 1.176" 2 items
  39. 1.225" 2 items
  40. 1.234" 1 item
  41. 1.237" 2 items
  42. 1.239" 2 items
  43. 1.287" 2 items
  44. 1.296" 1 item
  45. 1.299" 2 items
  46. 1.350" 1 item
  47. 1.421" 1 item
  48. 1.424" 1 item
  49. 1.674" 1 item
  50. 1.725" 1 item
  51. 1.85" 2 items
  52. 1.859" 1 item
  53. 1.862" 1 item
  54. 1.925" 1 item
  55. 1.975" 2 items
  56. 2.05" 1 item
  57. 2.1" 2 items
  58. 2.225" 2 items
  59. 2.35" 2 items
  60. 2.475" 2 items
  61. 2.6" 2 items
  62. 2.612" 1 item
  63. 2.725" 2 items
  64. 2.737" 1 item
  65. 2.85" 2 items
  66. 2.862" 1 item
  67. 2.975" 2 items
  68. 3.1" 2 items
  69. 3.225" 2 items
  70. 3.35" 2 items
  71. 3.475" 2 items
  72. 3.484" 1 item
  73. 3.6" 2 items
  74. 3.725" 2 items
  75. 3.739" 1 item
  76. 3.85" 2 items
  77. 3.975" 2 items
  78. 3.987" 1 item
  79. 4.1" 2 items
  80. 4.225" 2 items
  81. 4.35" 2 items
  82. 4.359" 1 item
  83. 4.475" 2 items
  84. 4.487" 1 item
  85. 4.6" 2 items
  86. 4.725" 2 items
  87. 4.739" 1 item
  88. 4.85" 2 items
  89. 4.975" 2 items
  90. 4.984" 1 item
  91. 4.987" 1 item
  92. 5.1" 2 items
  93. 5.225" 2 items
  94. 5.239" 1 item
  95. 5.35" 2 items
  96. 5.359" 1 item
  97. 5.475" 2 items
  98. 5.6" 2 items
  99. 5.725" 2 items
  100. 5.739" 1 item
  101. 5.85" 2 items
  102. 5.975" 2 items
  103. 5.984" 1 item
  104. 5.987" 1 item
  105. 6.225" 2 items
  106. 6.475" 2 items
  107. 6.725" 2 items
  108. 6.975" 2 items
  109. 7.225" 2 items
  110. 7.475" 3 items
  111. 7.737" 1 item
  112. 7.975" 2 items
  113. 8.475" 2 items
  114. 8.975" 2 items
  115. 8.984" 1 item
  116. 9.234" 1 item
  117. 9.475" 2 items
  118. 9.487" 1 item
  119. 9.975" 2 items
  120. 9.984" 1 item
  121. 10.475" 2 items
  122. 10.975" 2 items
  123. 11.475" 2 items
  124. 11.975" 2 items
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  128. 15.955" 3 items
  129. 16.955" 3 items
  130. 17.955" 3 items
  131. 18.955" 2 items
  132. 19.955" 2 items
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  135. 22.94" 2 items
  136. 23.94" 2 items
  137. 24.94" 2 items
  138. 25.94" 2 items
  139. 1.25 mm 1 item
  140. 1.8 mm 4 items
  141. 2 mm 4 items
  142. 2.5 mm 6 items
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  180. 11.5 mm 5 items
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  182. 11.8 mm 2 items
  183. 11.91 mm 2 items
  184. 12 mm 9 items
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  186. 12.5 mm 6 items
  187. 13 mm 8 items
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  192. 14 mm 9 items
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  198. 15.88 mm 1 item
  199. 16 mm 13 items
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  203. 17 mm 11 items
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  211. 19.8 mm 2 items
  212. 20 mm 13 items
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  215. 21 mm 9 items
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  227. 24.6 mm 3 items
  228. 25 mm 12 items
  229. 25.2 mm 2 items
  230. 25.5 mm 4 items
  231. 25.8 mm 2 items
  232. 26 mm 11 items
  233. 26.5 mm 5 items
  234. 27 mm 10 items
  235. 27.5 mm 4 items
  236. 27.7 mm 1 item
  237. 28 mm 13 items
  238. 28.5 mm 2 items
  239. 29 mm 8 items
  240. 29.2 mm 2 items
  241. 29.5 mm 3 items
  242. 30 mm 11 items
  243. 30.5 mm 2 items
  244. 31 mm 8 items
  245. 31.5 mm 4 items
  246. 31.6 mm 1 item
  247. 31.7 mm 1 item
  248. 32 mm 11 items
  249. 32.5 mm 6 items
  250. 33 mm 9 items
  251. 33.5 mm 4 items
  252. 34 mm 8 items
  253. 34.5 mm 4 items
  254. 35 mm 11 items
  255. 35.5 mm 5 items
  256. 36 mm 8 items
  257. 36.5 mm 3 items
  258. 37 mm 10 items
  259. 37.5 mm 2 items
  260. 37.6 mm 1 item
  261. 38 mm 9 items
  262. 38.5 mm 2 items
  263. 38.7 mm 2 items
  264. 39 mm 9 items
  265. 39.45 mm 1 item
  266. 39.5 mm 2 items
  267. 39.7 mm 1 item
  268. 40 mm 12 items
  269. 41 mm 9 items
  270. 41.2 mm 2 items
  271. 41.5 mm 1 item
  272. 41.6 mm 1 item
  273. 41.7 mm 1 item
  274. 42 mm 10 items
  275. 42.5 mm 2 items
  276. 43 mm 7 items
  277. 43.7 mm 3 items
  278. 44 mm 10 items
  279. 44.2 mm 1 item
  280. 44.6 mm 1 item
  281. 45 mm 11 items
  282. 45.7 mm 1 item
  283. 45.84 mm 1 item
  284. 46 mm 9 items
  285. 46.2 mm 2 items
  286. 47 mm 7 items
  287. 47.5 mm 2 items
  288. 47.6 mm 2 items
  289. 48 mm 10 items
  290. 48.7 mm 2 items
  291. 49 mm 8 items
  292. 49.6 mm 1 item
  293. 50 mm 11 items
  294. 51 mm 6 items
  295. 51.6 mm 2 items
  296. 52 mm 9 items
  297. 52.6 mm 1 item
  298. 53 mm 9 items
  299. 54 mm 9 items
  300. 54.5 mm 2 items
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  303. 56 mm 11 items
  304. 57 mm 6 items
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  309. 60 mm 11 items
  310. 61 mm 7 items
  311. 61.5 mm 2 items
  312. 61.6 mm 2 items
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  314. 62.6 mm 1 item
  315. 63 mm 9 items
  316. 64 mm 8 items
  317. 64.6 mm 2 items
  318. 65 mm 11 items
  319. 66 mm 8 items
  320. 66.6 mm 1 item
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  322. 68 mm 8 items
  323. 68.26 mm 1 item
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  326. 71 mm 5 items
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  330. 74.2 mm 1 item
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  341. 82.5 mm 2 items
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  343. 84 mm 7 items
  344. 84.6 mm 1 item
  345. 85 mm 9 items
  346. 86 mm 7 items
  347. 87 mm 6 items
  348. 87.5 mm 1 item
  349. 88 mm 5 items
  350. 89 mm 3 items
  351. 90 mm 10 items
  352. 91 mm 5 items
  353. 92 mm 7 items
  354. 92.5 mm 2 items
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  357. 95 mm 11 items
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  360. 97.5 mm 2 items
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  363. 100 mm 11 items
  364. 101.6 mm 1 item
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  373. 109 mm 6 items
  374. 109.5 mm 1 item
  375. 109.6 mm 1 item
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  395. 128 mm 6 items
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  398. 132 mm 5 items
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  400. 135 mm 7 items
  401. 136 mm 4 items
  402. 137 mm 2 items
  403. 138 mm 3 items
  404. 139.5 mm 1 item
  405. 140 mm 8 items
  406. 143 mm 2 items
  407. 144 mm 2 items
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  410. 146 mm 2 items
  411. 148 mm 4 items
  412. 149.5 mm 3 items
  413. 150 mm 7 items
  414. 154.5 mm 2 items
  415. 155 mm 4 items
  416. 156 mm 2 items
  417. 158 mm 1 item
  418. 159.5 mm 2 items
  419. 160 mm 6 items
  420. 162 mm 1 item
  421. 164.5 mm 2 items
  422. 165 mm 5 items
  423. 167 mm 1 item
  424. 169.3 mm 1 item
  425. 169.5 mm 2 items
  426. 170 mm 6 items
  427. 174 mm 2 items
  428. 174.2 mm 1 item
  429. 175 mm 5 items
  430. 178 mm 1 item
  431. 179 mm 1 item
  432. 180 mm 6 items
  433. 185 mm 4 items
  434. 188 mm 2 items
  435. 190 mm 6 items
  436. 193 mm 1 item
  437. 194 mm 2 items
  438. 194.3 mm 1 item
  439. 195 mm 7 items
  440. 199.3 mm 1 item
  441. 200 mm 8 items
  442. 203 mm 2 items
  443. 205 mm 3 items
  444. 206 mm 2 items
  445. 208.5 mm 1 item
  446. 209 mm 1 item
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  448. 212 mm 2 items
  449. 214 mm 1 item
  450. 215 mm 2 items
  451. 220 mm 3 items
  452. 224 mm 2 items
  453. 225 mm 3 items
  454. 229.3 mm 1 item
  455. 230 mm 4 items
  456. 232 mm 1 item
  457. 235 mm 3 items
  458. 236 mm 3 items
  459. 239.3 mm 1 item
  460. 240 mm 3 items
  461. 243 mm 2 items
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  468. 270 mm 4 items
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  471. 279.3 mm 1 item
  472. 279.5 mm 1 item
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  474. 285 mm 2 items
  475. 289.3 mm 1 item
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  477. 294.5 mm 1 item
  478. 300 mm 4 items
  479. 305 mm 2 items
  480. 307 mm 2 items
  481. 310 mm 2 items
  482. 315 mm 2 items
  483. 319.5 mm 1 item
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  485. 325 mm 2 items
  486. 330 mm 1 item
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  488. 339.5 mm 1 item
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  492. 360 mm 1 item
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  494. 374.5 mm 1 item
  495. 375 mm 2 items
  496. 387 mm 2 items
  497. 399.5 mm 1 item
  498. 400 mm 2 items
  499. 487 mm 1 item
  500. 630 mm 1 item
Outer Diameter - Actual
  1. 54 mm 1 item
  2. 55 mm 1 item
  3. 56 mm 1 item
  4. 57 mm 1 item
  5. 59 mm 1 item
  6. 60 mm 1 item