O-Rings: Enduro-Shield and Flexi-Shield

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Flexi-Shield and Enduro-Shield O-Rings are designed to provide an EMI seal for the life of a system. These o-rings are ideal for use in jam-nut connectors. In actual use, this gasket has achieved up to 1,000 insertions.

Category:
Dash No.Dimensions
W Dia .Tol .IDTol .
011 .070" ±.003  .301" ±.020" 
012  .364" 
013  .426" 
014  .489" 
015  .551" 
016  .614" 
017  .676" 
018  .739" 
019  .801" 
020  .864"
021 .926"
022  .989"
023 1.051"
024 1.114"
025 1.176"
026 1.239"
027  1.301"
028 1.364"
029  1.489"
030 1.614"
031  1.739"
032 1.864"
033  1.989"
034 .070" ±.003" 2.114" ±.030" 
035 2.239" 
036 2.364" 
037 2.489" 
038 2.614" 
039 2.739" 
040 2.864" 
041 2.989" 
042 3.239" 
043 3.489" 
044 3.739" 
045 3.989" 
046 4.239" 
047 4.489" 
048 4.739" 
049 4.989" 
050 5.239" 
111 .103" ±.004"  .424" ±.020" 
112  .487" 
113  .549" 
114  .612" 
115  .674" 
116  .737" 
117  .799" 
118  .862" 
119  .924" 
120  .987" 
121 1.049" 
122 1.112" 
123 1.174" 
124 1.237" 
125 1.299" 
126 1.372" 
127 1.299" 
128 1.487" 
129 1.549" 
130 1.612" 
131 1.674" 
132 1.737" 
133 1.799" 
134 1.862" 
135 1.925" 
136 1.987" 
137 .103" ±.004" 2.050" ±.030" 
138 2.112" 
139 2.175" 
140 2.237" 
141 2.300" 
142 2.362" 
143 2.425" 
144 2.487" 
145 2.550" 
146 2.612" 
147 2.675" 
148 2.737" 
149 2.800" 
150 2.862" 
151 2.987" 
152 3.237" 
153 3.487" 
154 3.737" 
155 .103" ±.004" 3.987" ±.035" 
156 4.237" 
157 4.487" 
158 4.737" 
159 4.987" 
160 5.237" 
161 5.487" 
162 5.737" 
163 5.987" 
164 6.237" 
165 6.487" 
166 6.737" 
167 6.987" 
168 7.237" 
169 7.487" 
170 7.737" 
171 7.987" 
172 8.237" 
173 8.487" 
174 .103" ±.004" 8.737" ±.040" 
175 8.987" 
176 9.237" 
177 9.487" 
178 9.737" 
210 .139" ±.005"  .734" ±.020 
211  .796" 
212  .859" 
213  .921" 
214  .984" 
215 1.046" 
216 1.109" 
217 1.171" 
218 1.234" 
219 1.296" 
220 1.359" 
221 1.421" 
222 1.484" 
223 1.609" 
224 1.734" 
225 1.859" 
226  1.984" 
227  2.109" 
228  2.234" 
229  2.359" 
230  2.484" 
231  2.609" 
232  2.734" 
233  2.859" 
234  2.984" 
235 .139" ±.005"  3.109" ±.030" 
236  3.234" 
237  3.359" 
238  3.484" 
239  3.609" 
240  3.734" 
241  3.859" 
242  3.984" 
243  4.109" 
244  4.234" 
245  4.359" 
246  4.484" 
247  4.609" 
248  4.734" 
249  4.859" 
250  4.984" 
251 .139" ±.005"  5.109" ±.035" 
252  5.234" 
253  5.359" 
254  5.484" 
255  5.609" 
256  5.734" 
257  5.859" 
258 .139" ±.005"  5.984" ±.040" 
259  6.234" 
260  6.484" 
261  6.734" 
262  6.984" 
263  7.234" 
264  7.484" 
265  7.734" 
266  7.984" 
267  8.234" 
268  8.484" 
269  8.734" 
270  8.984" 
271 .139" ±.005"  9.234" ±.045" 
272  9.484" 
273  9.734" 
274  9.984" 
275 10.484"
276  10.984"
277 .139" ±.005" 11.484"±.050"
278  11.984"
279  12.984"
280 13.984"
281  14.984"
282  15.955"
283  16.955"
284  17.955"

 

 

 

These gaskets are a one-on-one replacement for military “AS” series o-rings. The dash numbers of the gaskets in the table are dimensionally interchangeable with AS568 o-ring dash numbers. Custom size o-rings are also available. Please refer to Custom Gaskets for more information.

Materials

These o-rings are made out of our standard force Enduro-Shield or Flexi-Shield gasket material. The solid core or tubing makes it extremely durable, especially in sliding applications like connectors.

Spiral: Tin/lead plated beryllium copper. (See Options for RoHS compliance).
Core: Flexi-Shield: 35 durometer silicone tubing. Enduro-Shield: cured silicone adhesive.

Shielding Quality

Enduro-Shield or Flexi-Shield O-Rings offer shielding quality from 116 dB to 152 dB.
The shielding quality of each type may vary depending on your specific application.

Compression Force

Enduro-Shield or Flexi-Shield standard O-Rings require approximately 30 pounds per linear inch to compress properly. Optimal compression of the gasket is 25% of the diameter of the spiral.

Mounting

Recommended Groove Dimensions
W Diameter Depth Width
.070″ .053″ .094″
.103″ .077″ .141″
.139″ .104″ .187″

Plating

The gasket is electroplated, 90% tin, 10% lead (edges unplated).
Plating options can be specified by adding a prefix before the part number:
E: Edge tin/lead plating (includes edges) for high humidity or salt-fog environments
IW: RoHS compliant tin plating (Example: IWSSOG-B-050)
EIW: RoHS compliant edge tin plating for high humidity or salt-fog

Core Material

The core for Flexi-Shield O-Rings (FSOG) is commercial grade silicone tubing. Fluorosilicone is also available by request.
The standard core for Enduro-Shield O-Rings (SSOG) is silicone.
A special core can be requested for SSOG O-Rings (as shown below):
-F: Fluorosilicone (Example: ESSOG-B-050-F)
-O: Space Qualified Silicone: non-outgassing (Enduro-Shield only)
-Z: Silicone which is a non-acetic acid adhesive (per MIL-A-46146)
Note: An EMI/Environmental O-Ring is in development. Contact us for details.

Ordering Information

O-Rings are ordered by the piece. Custom sizes are also available. Not all configurations are stock items. Contact us for availability.

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