<h3 class="m-h3--wysiwyg">Dimensional Drawings</h3><div class="pad_b15"><div><p style="display: inline-block; width: 430px;">P Series<br /><span class="fontType">NPA, NPB, NPSW, NPSK, NPF, NPFH, NPEG</span></p><p style="display: inline-block; width: 300px;">Back-Up Ring<br /><span class="fontType">NPBR</span></p></div><img alt="O-Ring - P Series: Related Image" src="//uk.misumi-ec.com/linked/item/10300330520/img/drw_22.gif" /></div><div class="pad_b15"><div style="position: relative;"><p style="position: absolute; top: 0px; left: 0px;">For surface mounting /<br />For external pressure</p><p style="position: absolute; top: 0px; left: 160px;">For surface mounting /<br />For internal pressure</p><p style="position: absolute; top: 0px; left: 330px;">For Fixing Cylinder Surface</p><p style="position: absolute; top: 0px; left: 600px;">For Motion</p><p style="position: absolute; top: 135px; left: 0px;">No Back-Up Ring</p><p style="position: absolute; top: 135px; left: 310px;">Back-Up Ring on One Side</p><p style="position: absolute; top: 135px; left: 580px;">Back-Up Rings on Both Sides</p><img alt="O-Ring - P Series: Related Image" src="//content.misumi-ec.com/image/upload/t_msmwm_wyg/v1/p/jp/product/wysiwyg/110300330520/110300330520_002_20230913143356.gif" /></div></div><h2>Detailed Fitting Size</h2><p id="shiyou">&nbsp;</p><div class="m-cols" data-autoheight="group"><div class="m-cols__wrap"><div class="m-cols__3of5"><div class="m-thumbnail"><table cellspacing="0" rules="all"><tbody><tr><td align="center" class="headerCell" rowspan="2">Type</td><td align="center" class="headerCell" rowspan="2">No,</td><td align="center" class="headerCell" colspan="3">G Dimension (Tolerance <span style="display: inline-flex; flex-direction: column; vertical-align: middle; text-align: center; font-size: 8px;"><span>+ 0.25</span> <span style="margin-right: 1em;">0</span></span>)</td><td align="center" class="headerCell" rowspan="2">H Dimension<br />H&plusmn;0.05</td><td align="center" class="headerCell" rowspan="2">R Dimension<br />Max. Value</td></tr><tr><td align="center" class="headerCell">No Back-Up Ring<br />　</td><td align="center" class="headerCell">Back-Up Ring on One Side<br />　</td><td align="center" class="headerCell">Back-Up Rings on Both Sides<br />　</td></tr><tr><td align="left" rowspan="4"><font class="fontType">&nbsp;NPA NPB<br />&nbsp;NPSW NPSK<br />&nbsp;NPF NPFH<br />&nbsp;NPEG</font></td><td><font class="fontType">3 to 10</font></td><td align="center" class="coloredCell">2.5</td><td align="center" class="coloredCell">3.9</td><td align="center" class="coloredCell">5.4</td><td align="center" class="coloredCell">1.4</td><td align="center" class="coloredCell">0.4</td></tr><tr><td><font class="fontType">10 A to 22</font></td><td align="center" class="coloredCell">3.2</td><td align="center" class="coloredCell">4.4</td><td align="center" class="coloredCell">6.0</td><td align="center" class="coloredCell">1.8</td><td align="center" class="coloredCell">0.4</td></tr><tr><td><font class="fontType">22 A to 50</font></td><td align="center" class="coloredCell">4.7</td><td align="center" class="coloredCell">6.0</td><td align="center" class="coloredCell">7.8</td><td align="center" class="coloredCell">2.7</td><td align="center" class="coloredCell">0.8</td></tr><tr><td><font class="fontType">50 A to 80</font></td><td align="center" class="coloredCell">7.5</td><td align="center" class="coloredCell">9.0</td><td align="center" class="coloredCell">11.5</td><td align="center" class="coloredCell">4.6</td><td align="center" class="coloredCell">0.9</td></tr></tbody></table></div></div><div class="m-cols__2of5"><div class="m-thumbnail"><ul class="m-notesList"><li>(1) For O-rings for surface mounting, design the piping system in such a way that, when the internal pressure is applied, the outer circumference of O-rings is put in close contact with the outer wall of the groove; and when an external pressure is applied, the inner circumference of O-rings is put in close contact with the inner wall of the groove.</li><li>(2) When using an O-ring for surface mounting for an internal pressure, if the length of D is 30&nbsp;mm or less, make the length approximately 0.2 to 0.3&nbsp;mm longer.</li><li>(3) The groove dimensions are for reference.</li></ul></div></div></div></div><h3 class="m-h3--wysiwyg">Product Specifications</h3><div class="pad_b15"><table border="2" cellspacing="0" rules="all"><tbody><tr><td align="center" class="headerCell">Type</td><td align="center" class="headerCell">[M] Material</td><td align="center" class="headerCell">JIS Material<br />Identification Symbol</td><td align="center" class="headerCell">[H]Hardness (JIS Hs)</td><td align="center" class="headerCell">Color</td><td align="center" class="headerCell">Operable Temperature Range</td><td align="center" class="headerCell">Old JIS Symbol</td><td align="center" class="headerCell">Applications:</td><td align="center" class="headerCell">Features</td></tr><tr><td class="bodyCell"><font class="fontType">NPA</font></td><td align="center" class="bodyCell" rowspan="2">Nitrile Rubber</td><td align="center" class="bodyCell">NBR-70-1</td><td align="center" class="bodyCell">70&plusmn;5</td><td align="center" class="bodyCell" rowspan="2">Black</td><td align="center" class="bodyCell">－30 to 100&deg;C</td><td align="center" class="bodyCell">Class 1 A</td><td align="center" class="bodyCell" rowspan="2">Mineral Oil Resistant</td><td class="bodyCell" rowspan="2">Most representative material with superior oil / abrasion resistance and heat stability.</td></tr><tr><td class="bodyCell"><font class="fontType">NPB</font></td><td align="center" class="bodyCell">NBR-90</td><td align="center" class="bodyCell">90&plusmn;5</td><td align="center" class="bodyCell">－25 to 100&deg;C</td><td align="center" class="bodyCell">Class 1 B</td></tr><tr><td class="bodyCell"><font class="fontType">NPSW</font></td><td align="center" class="bodyCell" rowspan="2">Silicon Rubber</td><td align="center" class="bodyCell">-</td><td align="center" class="bodyCell">50&plusmn;5</td><td align="center" class="bodyCell">Milky White</td><td align="center" class="bodyCell">－50 to 200&deg;C</td><td align="center" class="bodyCell">&mdash;</td><td align="center" class="bodyCell" rowspan="2">Heat Resistant</td><td class="bodyCell" rowspan="2">Having excellent high and low temperature resistances, this material covers the widest range of operating temperatures among synthetic rubbers.<br />NPSW is semitransparent and there are individual differences in color.<br />NPSW and NPSK conform to Food Sanitation Act.</td></tr><tr><td class="bodyCell"><font class="fontType">NPSK</font></td><td align="center" class="bodyCell">VMQ-70</td><td align="center" class="bodyCell">70&plusmn;5</td><td align="center" class="bodyCell">Scarlet Red</td><td align="center" class="bodyCell">－50 to 200&deg;C</td><td align="center" class="bodyCell">Class 4 C</td></tr><tr><td class="bodyCell"><font class="fontType">NPF</font></td><td align="center" class="bodyCell" rowspan="2">Fluoro Rubber</td><td align="center" class="bodyCell">FKM-70</td><td align="center" class="bodyCell">70&plusmn;5</td><td align="center" class="bodyCell" rowspan="2">Black</td><td align="center" class="bodyCell" rowspan="2">－15 to 200&deg;C</td><td align="center" class="bodyCell">Class 4 D</td><td align="center" class="bodyCell" rowspan="2">Heat Resistant</td><td class="bodyCell" rowspan="2">Best in oil / chemical resistance and heat stability as synthetic rubber. Suitable for a wide range of applications.<br /><img alt="" src="//uk.misumi-ec.com/linked/item/10310604169/img/icon_ancher_black.gif" />&nbsp; <a class="VN_scroll" href="#sankou">Chemical Resistance (Reference)</a></td></tr><tr><td class="bodyCell"><font class="fontType">NPFH</font></td><td align="center" class="bodyCell">FKM-90</td><td align="center" class="bodyCell">90&plusmn;5</td><td align="center" class="bodyCell">&mdash;</td></tr><tr><td class="bodyCell"><font class="fontType">NPEG</font></td><td align="center" class="bodyCell">Ethylene Propylene Rubber</td><td align="center" class="bodyCell">EPDM-70</td><td align="center" class="bodyCell">70&plusmn;5</td><td align="center" class="bodyCell">Black</td><td align="center" class="bodyCell">－45 to 130&deg;C</td><td align="center" class="bodyCell">&mdash;</td><td align="center" class="bodyCell">For weather resistant items</td><td class="bodyCell">Excellent material in weather resistance, ozone resistance and electrical characteristics.</td></tr><tr><td class="bodyCell"><font class="fontType">NPBR</font></td><td align="center" class="bodyCell">Fluororesin</td><td align="center" class="bodyCell">-</td><td align="center" class="bodyCell">-</td><td align="center" class="bodyCell">White</td><td align="center" class="bodyCell">Subject to O-ring</td><td align="center" class="bodyCell">&mdash;</td><td align="center" class="bodyCell">For high voltage use</td><td class="bodyCell">Used when the pressure resistance of O-ring is insufficient.</td></tr></tbody></table><span class="fontNote">[ ! ]</span> There are individual differences in whether the surface is glossy or not.<br /> <span class="fontNote">[ ! ]</span> The service life is not constant depending on the operating environment.<br /><span style="margin-left: 24px;">* Please also consider products that are heat resistant and chemical resistant.</span></div>