N規格(Oリングと溝の寸法表)

Oリング(オーリング)N規格とは、線径(Oリングの太さ)5.0mmをシリーズ化した寸法規格で、主として真空装置に用いられています。N規格のOリング、並びにN規格のOリングに推奨される溝の寸法は、下表のとおりです。

規格の一覧(早見表)
寸法の選び方(ガイド)
呼び番号 線径
(太さ)
内径 G1 G1
許容差
G2 G G
許容差
S S
許容差
N55.0±0.135.0±0.205.5+1.0/018.56.5+0.10/03.80/-0.20
N65.0±0.136.0±0.206.5+1.0/019.56.5+0.10/03.80/-0.20
N75.0±0.137.0±0.207.5+1.0/020.56.5+0.10/03.80/-0.20
N85.0±0.138.0±0.208.5+1.0/021.56.5+0.10/03.80/-0.20
N95.0±0.139.0±0.209.5+1.0/022.56.5+0.10/03.80/-0.20
N105.0±0.1310.0±0.3010.5+1.0/023.56.5+0.10/03.80/-0.20
N115.0±0.1311.0±0.3011.5+1.0/024.56.5+0.10/03.80/-0.20
N125.0±0.1312.0±0.3012.5+1.0/025.56.5+0.10/03.80/-0.20
N135.0±0.1313.0±0.3013.5+1.0/026.56.5+0.10/03.80/-0.20
N155.0±0.1315.0±0.3015.5+1.0/028.56.5+0.10/03.80/-0.20
N165.0±0.1316.0±0.3016.5+1.0/029.56.5+0.10/03.80/-0.20
N185.0±0.1318.0±0.3018.5+1.0/031.56.5+0.10/03.80/-0.20
N205.0±0.1320.0±0.4520.5+1.0/033.56.5+0.10/03.80/-0.20
N235.0±0.1323.0±0.4523.5+1.0/036.56.5+0.10/03.80/-0.20
N255.0±0.1325.0±0.4525.5+1.0/038.56.5+0.10/03.80/-0.20
N285.0±0.1328.0±0.4528.5+1.0/041.56.5+0.10/03.80/-0.20
N305.0±0.1330.0±0.5530.5+1.0/043.56.5+0.10/03.80/-0.20
N325.0±0.1332.0±0.5532.5+1.0/045.56.5+0.10/03.80/-0.20
N335.0±0.1333.0±0.5533.5+1.0/046.56.5+0.10/03.80/-0.20
N355.0±0.1335.0±0.5535.5+1.0/048.56.5+0.10/03.80/-0.20
N385.0±0.1338.0±0.5538.5+1.0/051.56.5+0.10/03.80/-0.20
N405.0±0.1340.0±0.7040.5+1.0/053.56.5+0.10/03.80/-0.20
N425.0±0.1342.0±0.7042.5+1.0/055.56.5+0.10/03.80/-0.20
N435.0±0.1343.0±0.7043.5+1.0/056.56.5+0.10/03.80/-0.20
N455.0±0.1345.0±0.7045.5+1.0/058.56.5+0.10/03.80/-0.20
N485.0±0.1348.0±0.7048.5+1.0/061.56.5+0.10/03.80/-0.20
N505.0±0.1350.0±1.0051.0+1.0/064.06.5+0.10/03.80/-0.20
N555.0±0.1355.0±1.0056.0+1.0/069.06.5+0.10/03.80/-0.20
N605.0±0.1360.0±1.0061.0+1.0/074.06.5+0.10/03.80/-0.20
N655.0±0.1365.0±1.0066.0+1.0/079.06.5+0.10/03.80/-0.20
N705.0±0.1370.0±1.0071.0+1.0/084.06.5+0.10/03.80/-0.20
N755.0±0.1375.0±1.3076.0+1.0/089.06.5+0.10/03.80/-0.20
N805.0±0.1380.0±1.3081.0+1.0/094.06.5+0.10/03.80/-0.20
N855.0±0.1385.0±1.3086.0+1.0/099.06.5+0.10/03.80/-0.20
N885.0±0.1388.0±1.3089.0+1.0/0102.06.5+0.10/03.80/-0.20
N905.0±0.1390.0±1.3091.0+1.0/0104.06.5+0.10/03.80/-0.20
N955.0±0.1395.0±1.3096.0+1.0/0109.06.5+0.10/03.80/-0.20
N1005.0±0.13100.0±1.60101.5+1.0/0114.56.5+0.10/03.80/-0.20
N1055.0±0.13105.0±1.60106.5+1.0/0119.56.5+0.10/03.80/-0.20
N1085.0±0.13108.0±1.60109.5+1.0/0122.56.5+0.10/03.80/-0.20
N1105.0±0.13110.0±1.60111.5+1.0/0124.56.5+0.10/03.80/-0.20
N1155.0±0.13115.0±1.60116.5+1.0/0129.56.5+0.10/03.80/-0.20
N1205.0±0.13120.0±1.60121.5+1.0/0134.56.5+0.10/03.80/-0.20
N1255.0±0.13125.0±1.60126.5+1.0/0139.56.5+0.10/03.80/-0.20
N1305.0±0.13130.0±1.60131.5+1.0/0144.56.5+0.10/03.80/-0.20
N1325.0±0.13132.0±1.60133.5+1.0/0146.56.5+0.10/03.80/-0.20
N1355.0±0.13135.0±1.60136.5+1.0/0149.56.5+0.10/03.80/-0.20
N1405.0±0.13140.0±1.60141.5+1.0/0154.56.5+0.10/03.80/-0.20
N1455.0±0.13145.0±1.60146.5+1.0/0159.56.5+0.10/03.80/-0.20
N1505.0±0.13150.0±1.90152.0+1.0/0165.06.5+0.10/03.80/-0.20
N1555.0±0.13155.0±1.90157.0+1.0/0170.06.5+0.10/03.80/-0.20
N1585.0±0.13158.0±1.90160.0+1.0/0173.06.5+0.10/03.80/-0.20
N1605.0±0.13160.0±1.90162.0+1.0/0175.06.5+0.10/03.80/-0.20
N1655.0±0.13165.0±1.90167.0+1.0/0180.06.5+0.10/03.80/-0.20
N1705.0±0.13170.0±1.90172.0+1.0/0185.06.5+0.10/03.80/-0.20
N1755.0±0.13175.0±1.90177.0+1.0/0190.06.5+0.10/03.80/-0.20
N1805.0±0.13180.0±1.90182.0+1.0/0195.06.5+0.10/03.80/-0.20
N1855.0±0.13185.0±1.90187.0+1.0/0200.06.5+0.10/03.80/-0.20
N1905.0±0.13190.0±1.90192.0+1.0/0205.06.5+0.10/03.80/-0.20
N1955.0±0.13195.0±1.90197.0+1.0/0210.06.5+0.10/03.80/-0.20
N2005.0±0.13200.0±2.30202.5+1.0/0215.56.5+0.10/03.80/-0.20
N2055.0±0.13205.0±2.30207.5+1.0/0220.56.5+0.10/03.80/-0.20
N2105.0±0.13210.0±2.30212.5+1.0/0225.56.5+0.10/03.80/-0.20
N2155.0±0.13215.0±2.30217.5+1.0/0230.56.5+0.10/03.80/-0.20
N2185.0±0.13218.0±2.30220.5+1.0/0233.56.5+0.10/03.80/-0.20
N2205.0±0.13220.0±2.30222.5+1.0/0235.56.5+0.10/03.80/-0.20
N2255.0±0.13225.0±2.30227.5+1.0/0240.56.5+0.10/03.80/-0.20
N2305.0±0.13230.0±2.30232.5+1.0/0245.56.5+0.10/03.80/-0.20
N2355.0±0.13235.0±2.30237.5+1.0/0250.56.5+0.10/03.80/-0.20
N2405.0±0.13240.0±2.30242.5+1.0/0255.56.5+0.10/03.80/-0.20
N2455.0±0.13245.0±2.30247.5+1.0/0260.56.5+0.10/03.80/-0.20
N2505.0±0.13250.0±2.70252.5+1.0/0265.56.5+0.10/03.80/-0.20
N2555.0±0.13255.0±2.70257.5+1.0/0270.56.5+0.10/03.80/-0.20
N2605.0±0.13260.0±2.70262.5+1.0/0275.56.5+0.10/03.80/-0.20
N2655.0±0.13265.0±2.70267.5+1.0/0280.56.5+0.10/03.80/-0.20
N2705.0±0.13270.0±2.70272.5+1.0/0285.56.5+0.10/03.80/-0.20
N2755.0±0.13275.0±2.70277.5+1.0/0290.56.5+0.10/03.80/-0.20
N2805.0±0.13280.0±2.70282.5+1.0/0295.56.5+0.10/03.80/-0.20
N2855.0±0.13285.0±2.70287.5+1.0/0300.56.5+0.10/03.80/-0.20
N2905.0±0.13290.0±2.70292.5+1.0/0305.56.5+0.10/03.80/-0.20
N2955.0±0.13295.0±2.70297.5+1.0/0310.56.5+0.10/03.80/-0.20
N3005.0±0.13300.0±3.20303.0+1.5/0316.06.5+0.10/03.80/-0.20
N3105.0±0.13310.0±3.20313.0+1.5/0326.06.5+0.10/03.80/-0.20
N3205.0±0.13320.0±3.20323.0+1.5/0336.06.5+0.10/03.80/-0.20
N3305.0±0.13330.0±3.20333.0+1.5/0346.06.5+0.10/03.80/-0.20
N3405.0±0.13340.0±3.20343.0+1.5/0356.06.5+0.10/03.80/-0.20
N3505.0±0.13350.0±3.70353.0+1.5/0366.06.5+0.10/03.80/-0.20
N3605.0±0.13360.0±3.70363.0+1.5/0376.06.5+0.10/03.80/-0.20
N3705.0±0.13370.0±3.70373.0+1.5/0386.06.5+0.10/03.80/-0.20
N3805.0±0.13380.0±3.70383.0+1.5/0396.06.5+0.10/03.80/-0.20
N3905.0±0.13390.0±3.70393.0+1.5/0406.06.5+0.10/03.80/-0.20
N4005.0±0.13400.0±4.20404.0+1.5/0417.06.5+0.10/03.80/-0.20
N4105.0±0.13410.0±4.20414.0+1.5/0427.06.5+0.10/03.80/-0.20
N4205.0±0.13420.0±4.20424.0+1.5/0437.06.5+0.10/03.80/-0.20
N4305.0±0.13430.0±4.20434.0+1.5/0447.06.5+0.10/03.80/-0.20
N4405.0±0.13440.0±4.20444.0+1.5/0457.06.5+0.10/03.80/-0.20
N4505.0±0.13450.0±4.80454.0+1.5/0467.06.5+0.10/03.80/-0.20
N4605.0±0.13460.0±4.80464.0+1.5/0477.06.5+0.10/03.80/-0.20
N4705.0±0.13470.0±4.80474.0+1.5/0487.06.5+0.10/03.80/-0.20
N4805.0±0.13480.0±4.80484.0+1.5/0497.06.5+0.10/03.80/-0.20
N4905.0±0.13490.0±4.80494.0+1.5/0507.06.5+0.10/03.80/-0.20
N5005.0±0.13500.0±4.80504.0+1.5/0517.06.5+0.10/03.80/-0.20

※ 溝寸法は参考値です。