【产品】采用CHO-SEAL®全系列导电橡胶材料的导电密封圈，提供水汽密封功能、电磁密封和导电接地功能

时间： 2019-04-09 来源：Parker Chomerics

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PARKER CHOMERICS（派克固美丽）是全球领先的屏蔽材料和导热材料供应商之一，该公司的产品几乎覆盖了所有的相关应用领域。导电密封圈是该公司提供的一种重要产品类型，采用各种导电橡胶材料制成，通常安装在电子产品外壳的凹槽中，在提供水汽密封功能的同时，还能起到电磁密封和导电接地的功能。

图1 多种尺寸导电O形圈和导电D形圈的实物图

O形圈和D形圈是最常见的两种导电密封圈类型，图1中所展示的就是Parker Chomerics生产的多种尺寸导电O形圈和D形圈产品。O形和D形，并不是指我们眼见的垫圈环状结构，而是指垫圈截面的形状为O形和D形，如下图2中所示。O形圈的优点是结构适应性强，绝大部分的凹槽结构都能使用O形圈，使用和设计上更加灵活。D形圈也是很常用的一种结构，适用于至少有一面为平面的凹槽结构，通常会以平面一边为底面进行安装，通过这种结构上的微调整，能够获得更好的导电接触性和弹性支撑强度。

图2 O形圈和D形圈的结构示意图

这两种导电密封圈的横截面尺寸最小可以做到0.040英寸（1.02mm），最大可以做到0.350英寸（8.89mm）；环内径最小0.100英寸（2.54mm），理论上环内径没有上限，可以根据客户需求定制放大。有一点需要注意，当环内径大于2英寸（51mm）时，O形圈和D形圈都将不再采用预制成型的生产方式，而是改为橡胶条材料挤出后再拼接的生产方式。

该类型密封垫圈采用的材料为Parker Chomerics CHO-SEAL^®全系列的导电橡胶材料，橡胶基质有硅橡胶、氟硅橡胶、EPDM（三元乙丙橡胶）等，而填充金属颗粒有纯银、镀银铜、镀银铝、镀银玻璃、镀镍铝、镀镍石墨等多种。选择面广，适应性强，客户可以根据自身需求选取最合适的材料类型，以获得最切合的电气性能、机械性能和成本效益。

另外，特别提示一下，在设计过程中，要确保环形凹槽相对于密封圈留下了足够的空间余量，避免出现密封圈过盈配合的情况。推荐的D形圈高度余量为8%~20%，极限公差时的最大槽填充量为97%；O形圈推荐10%~25%的预留余量，极限公差时的最大槽填充量同样97%。

导电密封圈（O形圈和D形圈）的主要特点：

• 采用Parker Chomerics CHO-SEAL^®全系列导电橡胶材料

• 提供水汽密封、电磁密封和导电接地功能

• O形圈的优点是结构适应性强，使用和设计上更加灵活

• D形圈通过结构上的微调整，能够获得更好的导电接触性和弹性支撑强度

• 能够提供数百种不同尺寸的产品

• 推荐的D形圈高度余量为8%~20%，极限公差时的最大槽填充量为97%

• O形圈推荐10%~25%的预留余量，极限公差时的最大槽填充量同样为97%

导电密封圈（O形圈和D形圈）的典型应用：

• 电子产品外壳

• 屏蔽机箱，屏蔽机舱

• 小型便携式设备

• 电信设备，军工设备，工业设备

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【产品】CHO-SEAL®增强型橡胶屏蔽密封圈，以涤纶织物或金属层加固，能够提供极佳的机械强度

在既需要保留导电橡胶的弹性和密封性，又需要耐受极大机械强度的应用中，例如飞机的机身、舱门、翼板等应用环境，就不能使用普通的密封圈产品。Parker Chomerics为类似这样的特殊应用需求，专门开发了一种增强型橡胶屏蔽密封圈产品CHO-SEAL®。该产品采用导电橡胶材料为基础，增加涤纶织物或金属丝网结构进行加固，生产上采用整体塑模工艺，在提供增强的机械性能同时，还能保留导电橡胶的电气性能。

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【产品】圆形连接器专用橡胶屏蔽矩形圈，全面适用于国际国内标准

符合美军标的圆形连接器应用，是一种标准的应用需求，Parker Chomerics公司生产了一系列的标准型橡胶屏蔽矩形圈产品，以应对大量的此类应用需求。矩形圈相对于O形圈，其安装稳定性好，密封压力也更高，并且不会出现“回吸效应”，同尺寸的矩形圈在屏蔽效果和密封效果上都要好于O形圈。而且该公司生产的矩形圈系列产品，已经达到了与O形圈相同的精度水准，工艺成本更低，成本效益更高。

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【产品】美国军用标准防松螺母专用导电O形圈，采用CHO-SEAL®系列导电橡胶材料

O形圈由于结构通用性好，工艺精度高，一直都是密封圈类产品中最常见的类型之一。在既需要水汽密封，又需要电磁密封的应用环境中，就需要用到以导电橡胶为原料制成的导电O形圈产品。Parker Chomerics根据国际上比较流行的三款美国军用标准MIL-C-38999，MIL-C-26482和MIL-C-81511，生产了一系列标准的防松螺母专用导电O形圈产品。

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【选型】如何根据法兰的形状和尺寸，选择合适的橡胶密封O形圈

本文基于派克固美丽的产品，介绍了O形圈的基本定义，及其配合异形法兰的应用和选型方法。要求在法兰槽的设计中，考虑拐角的最小半径“r”，这个“r”至少为O形圈横截面直径的3倍，理想情况下应大于6倍。除了横截面直径以外，还需要特别注意的一个尺寸是中心线周长，法兰槽的中心线周长应当尽量与O形圈的中心线周长相匹配。以及根据法兰形状定制O圈的方案，能够精确的将O圈与法兰进行配合，从而完全消除应力问题。

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Conductive Elastomer Engineering Handbook Products and Custom Integrated Solutions

型号- 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Conductive Elastomer Engineering Handbook: Products and Custom Integrated Solutions

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V6433,10-05-4542-XXXX,10-00-2029-XXXXX,10-02-1492-XXXXX,19-07-22989-XXXX,20-01-5115-1239**,M83528/007Y007,19-09-28855-XXXX,M83528/007Y006,10-00-0010-XXXXX,19-05-12375-XXXX,19-07-12959-XXXX,19-08-12844-XXXX,19-08-C929-XXXX,10-04-3560-XXXX-40,19-09-E053-XXXX,40-TA-1010-1350,19-04-21194-XXXX,20-02-6565-1212,30-02-2051-XXXXX,19-04-25964-XXXX,19-09-L524-XXXX,19-09-14831-XXXX,19-09-LE24-XXXX,19-06-11223-XXXX,19-09-14645-XXXX,20-01-5055-1239,30-02-2043-XXXXX,19-08-12885-XXXX,40-T0-1020-6307,19-04-16104-XXXX,40-TA-1020-6460,19-04-26610-XXXX,19-04-14349-XXXX,10-01-6515-XXXXX,10-00-3550-XXXXX,10-00-1782-XXXXX,19-06-22037-XXXX,40-TA-1010-1310,19-04-13759-XXXX,19-04-14964-XXXX,19-04-22324-XXXX,10-07-4272-XXXX,19-04-21493-XXXX,10-05-1364-XXXX,19-07-26620-XXXX,10-07-3225-XXXX-40,19-04-28067-XXXX**,30-02-2056-XXXXX,19-04-11875-XXXX,19-04-25051-XXXX,19-04-27546-XXXX**,19-09-11540-XXXX,40-TA-1015-S6305,20-01-5005-1239,19-04-16162-XXXX,19-07-27622-XXXX,19-04-12908-XXXX,19-06-M412-XXXX,19-08-17623-XXXX,19-09-11434-XXXX,40-TA-1015-1298,19-04-24444-XXXX,19-04-22253-XXXX,40-TA-1015-6503,40-TA-1015-6502,CHO-SEAL 6371,19-04-22371-XXXX**,CHO-SEAL 6370,10-00-0044-XXXXX,19-05-21166-XXXX,19-07-21339-XXXX,10-05-10648-XXXX,10-00-2231-XXXXX,19-26-5575-0240,10-00-2536-XXXXX,10-04-5514-XXXX,20-01-5225-1239**,19-04-11228-XXXX,19-09-W321-XXXX,10-01-1375-XXXXX,19-05-Z586-XXXX-40,10-05-3369-XXXX,10-06-8560-XXXX,19-06-Z731-XXXX,10-04-2862-XXXX,30-03-2071-XXXXX,40-TA-1015-1273,10-00-2070-XXXXX,10-00-2040-XXXXX,19-04-26424-XXXX,19-04-23836-XXXX,19-04-16390-XXXX,19-05-15343-XXXX,19-04-23158-XXXX,10-06-2750-XXXX-40,19-07-12951-XXXX,19-09-L453-XXXX,10-07-B447-XXXX,10-00-2227-XXXXX,40-TA-1015-1285,10-00-2777-XXXXX,40-TA-1015-1287,19-04-F371-XXXX-40,19-26-1800-0345,10-00-2228-XXXXX,19-04-22049-XXXX,20-02-6515-1212,30-02-2048-XXXXX,19-04-12910-XXXX,19-09-19925-XXXX,10-01-1240-XXXXX,19-07-W391-XXXX,10-00-0052-XXXXX,19-07-21881-XXXX,19-09-C032-XXXX,10-05-1363-XXXX-40,19-07-15804-XXXX,10-00-2320-XXXXX,CHO-SEAL 6330,10-07-3226-XXXX,19-07-25333-XXXX,19-09-16336-XXXX,10-04-9769-XXXX,10-04-8817-XXXX-40,19-04-11204-XXXX,19-06-L064-XXXX,10-00-5983-XXXXX,10-07-E263-XXXX,19-09-11225-XXXX,10-00-1406-XXXXX,10-03-1859-XXXXX,10-04-8363-XXXX-40,19-06-15899-XXXX,10-04-6386-XXXX**,19-09-30385-XXXX,20-01-5225-1239,19-07-27623-XXXX,10-05-6394-XXXX,19-08-23568-XXXX,19-09-11408-XXXX,19-04-20951-XXXX,19-07-12200-XXXX,10-07-4483-XXXX-40,10-00-4452-XXXXX,10-08-3872-XXXX,10-00-2230-XXXXX,10-04-8363-XXXX,19-07-25114-XXXX,19-09-18963-XXXX,30-03-2068-XXXXX,19-04-21162-XXXX,19-09-23709-XXXX,19-04-W049-XXXX,19-09-24684-XXXX,19-05-B254-XXXX,19-04-14261-XXXX,19-09-32174-XXXX,19-05-12883-XXXX,10-04-8133-XXXX-40,20-03-3731-1212,19-04-20982-XXXX,19-04-22066-XXXX,10-05-4542-XXXX-40,40-TA-1015-6371,10-00-0032-XXXXX,19-04-22129-XXXX,30-03-8800-XXXXX,19-04-12902-XXXX,10-00-1342-XXXXX,10-00-1407-XXXXX,19-09-10843-XXXX,10-06-6175-XXXX,20-01-5135-1239,30-03-2076-XXXXX,30-03-1981-XXXXX,10-05-1363-XXXX,10-06-C716-XXXX,19-05-12066-XXXX,19-09-X962-XXXX,10-05-4318-XXXX-40,19-09-19880-XXXX,20-01-5120-1239,30-02-2042-XXXXX,19-07-F463-XXXX,19-05-19354-XXXX,19-04-X787-XXXX,10-04-4254-XXXX,40-TA-2020-6371,19-05-F173-XXXX-40,40-TO-1020-V6433,10-08-4315-XXXX-40,10-00-1845-XXXXX,19-04-12909-XXXX,10-05-3224-XXXX,10-04-4148-XXXX,19-08-22217-XXXX,19-07-11294-XXXX,19-04-14632-XXXX,10-07-4217-XXXX-40,20-11-5020-1239,10-06-3599-XXXX-40,19-06-C442-XXXX,10-05-1362-XXXX-40,10-01-6565-XXXXX,20-01-5145-1239**,20-01-5140-1239**,10-00-4123-XXXXX,19-04-26087-XXXX,CHO-SEAL 6308,30-03-2075-XXXXX,CHO-SEAL 6307,20-01-5145-1239,10-05-6394-XXXX-40,20-02-6531-1212,10-04-1720-XXXX,19-07-L463-XXXX,40-TA-1015-6330,19-26-5541-0650,19-04-23086-XXXX,19-05-C128-XXXX,20-11-5035-1239,10-02-2736-XXXXX,30-02-2052-XXXX,19-09-28323-XXXX,46-TA-1020-90XX,19-09-22539-XXXX,19-07-12877-XXXX,20-03-6645-1212,10-07-4523-XXXX,19-04-11651-XXXX,19-09-24030-XXXX,19-05-L547-XXXX,19-04-14537-XXXX,19-09-25853-XXXX,10-04-1687-6503,10-00-1360-XXXXX,20-03-6685-1212*,40-T0-1015-V6433,20-03-3561-1212,19-04-20072-XXXX,19-07-M327-XXXX,10-00-2071-XXXXX,19-26-5538-0650,20-01-5055-1239**,20-02-6530-1212,19-08-E622-XXXX,19-09-F676-XXXX,10-04-W267-XXXX,19-09-19022-XXXX,19-04-22533-XXXX,20-03-L767-1212,19-09-24063-XXXX,19-09-17428-XXXX,10-05-1499-XXXX-40,10-04-3560-XXXX,30-02-2057-XXXXX,19-04-13564-XXXX,19-09-M942-XXXX,19-04-12792-XXXX,20-11-1683-1239,19-05-14960-XXXX,19-09-14377-XXXX,10-05-8635-XXXX,40-TA-1010-6460,30-02-ZZZZ-XXXXX,40-T0-1010-V6433,CHO-SEAL S6305,10-04-W293-XXXX,19-04-25875-XXXX**,10-00-1770-XXXXX,19-04-22230-XXXX,30-02-2050-XXXXX,19-07-F627-XXXX,10-05-2618-XXXX-40,10-05-6419-XXXX,19-04-15443-XXXX,20-02-6510-1212,10-04-2561-XXXX,30-03-2066-XXXXX,30-02-2055-XXXXX,10-01-1264-XXXXX,20-01-5135-1239**,

2022/2/17 - PARKER CHOMERICS - 应用笔记或设计指南代理服务技术支持现货查询批量订货

【应用】导电橡胶圈CHO-SEAL®6370为5G通信腔体滤波器提供电磁密封和环境密封

对于5G通信设备可能存在的EMI问题，推荐固美丽导电橡胶密封圈CHO-SEAL®6370。以硅橡胶为基质的导电橡胶材料CHO-SEAL®6370系列，其填充金属为镀镍石墨颗粒，具备镍金属的耐盐雾腐蚀能力和石墨颗粒的润滑特性。在10GHz频段及以下提供95dB的屏蔽效能，具有优异的屏蔽性能及密封性能。耐温范围-45℃～150℃，满足严苛应用环境。

2020-02-25 - 应用方案代理服务技术支持现货查询批量订货

【经验】什么是橡胶屏蔽O形密封圈压缩量？如何设计以实现更佳效果？

本文讨论的是关于O形圈在密封结构中的压缩量，这是设计过程中必须考虑的关键属性之一，正确的设计，能够保证在最长的使用寿命周期内，获得最佳的O形圈密封效果，对于O形圈以及配套法兰的损伤也会更小。

2019-05-24 - 设计经验代理服务技术支持现货查询批量订货

Optimizing electric vehicle system performance Sealing, shielding and thermal solutions

04/18 - PARKER CHOMERICS - 应用及方案代理服务技术支持现货查询批量订货

【经验】橡胶材料硬度对于O形密封圈设计的影响

本文要讨论的是关于橡胶材料硬度，这一关键参数对于O圈设计的影响。以派克固美丽公司提供的导电橡胶材料为实例，具体说明材料硬度这一属性。在高压力密封的环境中，就需要选用硬度高的橡胶材料，增加密封强度和长期抵抗高应力的能力。而在某些精密的密封环境中，就需要选用硬度低、强度小的橡胶材料，避免造成应力损伤。导电橡胶材料CHO-SEAL®系列，覆盖了40~85Shore A的宽广范围。

2019-05-25 - 设计经验代理服务技术支持现货查询批量订货

【经验】电动汽车电池性能最大化的五种方法

只有选择经过验证，可靠，高质量的产品才能实现电动汽车电池的有效热管理和EMI屏蔽，才能最大限度地提高性能。本文针对电动汽车电池热管理和EMI保护，推荐Parker Chomerics旗下EMI屏蔽材料方案。

2019-03-31 - 设计经验代理服务技术支持现货查询批量订货

Parker Chomerics（派克固美丽）导电弹性EMI垫片（模压和挤压材料）选型指南

目录- EMI Materials Gasket Elastomer Binder & Elastomer Filler

型号- CHO-TM101,CHO-SEAL 1285,L6303,CHO-SEAL 6452,CHO-SEAL 6330,CHO-SEAL®,CHO-SEAL 6371,CHO-SEAL 6370,1217,1215,1212,CHO-SEAL V6433,1298,6502,CHO-SEAL 1239,CHO-SEAL L6303,6503,6308,CHO-SEAL 1310,6307,V6433,CHOSEAL 6503,CHO-SEAL 6460,CHOSEAL 6502,1273,1350,CHO-SEAL S6600,1270,1224,1221,6435,S6600,CHO-SEAL 1401,CHO-SEAL 1287,6452,6330,1285,6371,6370,1239,1310,CHO-SEAL 1215,CHO-SEAL 1217,CHO-SEAL 6308,CHO-SEAL 6307,CHO-SEAL 1298,CHO-SEAL 6503,CHO-SEAL 6502,CHO-SEAL 1212,CHO-SEAL® 1215,CHO-SEAL 1273,CHO-SEAL 1350,6460,CHO-SEAL 1270,CHO-SEAL S6305,56600,1401,1287,CHO-SEAL 1221,CHO-SEAL 1224,CHO-SEAL,S6305,CHO-SEAL 6435

February 2020 - PARKER CHOMERICS - 选型指南代理服务技术支持现货查询批量订货