| Astra Seal(¿ ) |
Extreme low temperatures make most O-Rings brittle which in turn leads to failure. The Astra seal was created by Aerospace Engineer to combat the harch environments associated with liquid oxygen and the problems involved with sealing in other cold media, such as liquid nitrogen and hydrogen.
Since then the seals have been successfully used in several space shuttle/ rocket launches and a multitude of other applications by organizations such as Boeing, NASA, Lockheed, and the newly founded Space X. |
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Description
The Astra seal is comprised 302 stainless flat wound ribbon spring
encapsulated in either a FEP or PFA jacket to form an O-Ring
Spring Material
ASTM Type 302/AMS 5059
Temperature Range
FEP/Astra : -250 to +204
PFA/Astra : -250 to +260 | |
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| All our products are manufactured through our world class quality system; our quality rating is so high that we achieve a reject rate of less than 0.03%. As always all our products are supported by our excellent levels of customer service, which allow you to improve your profits, increase your market share plus add value to your business. We would welcome any questions or enquiries you have in relation to this product, please contact our customer support team, with any further requests. |
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| Available cross sections and force required to compress(pounds per linear inch) |
Cross
Section |
squeeze |
Groove
Depth |
Groove
Width |
Minimum
ID |
Force
Pounds |
| 1.91mm |
0.56mm |
1.35mm |
2.67mm |
12.70mm |
40 |
| 2.40mm |
0.61mm |
1.78mm |
3.18mm |
19.05mm |
40 |
| 2.62mm |
0.76mm |
1.90mm |
3.53mm |
19.05mm |
45 |
| 2.93mm |
0.76mm |
2.16mm |
3.94mm |
31.75mm |
40 |
| 3.00mm |
0.76mm |
2.24mm |
3.96mm |
31.75mm |
45 |
| 3.10mm |
0.76mm |
2.34mm |
4.07mm |
31.75mm |
50 |
| 3.53mm |
0.76mm |
2.79mm |
4.95mm |
31.75mm |
65 |
| 3.76mm |
0.84mm |
2.92mm |
4.95mm |
38.10mm |
85 |
| 4.00mm |
0.89mm |
3.10mm |
5.08mm |
38.10mm |
70 |
| 4.32mm |
1.02mm |
3.30mm |
5.84mm |
38.10mm |
90 |
| 4.50mm |
1.02mm |
3.48mm |
6.02mm |
38.10mm |
100 |
| 4.88mm |
1.12mm |
3.76mm |
6.48mm |
44.45mm |
110 |
| 5.34mm |
1.14mm |
4.19mm |
7.11mm |
50.80mm |
140 |
| 5.59mm |
1.14mm |
4.44mm |
7.37mm |
50.80mm |
140 |
| 5.72mm |
1.14mm |
4.57mm |
7.49mm |
50.80mm |
150 |
| 6.35mm |
1.27mm |
5.08mm |
8.25mm |
76.20mm |
110 |
| 6.99mm |
1.27mm |
5.71mm |
8.89mm |
88.90mm |
95 |
| 8.00mm |
1.52mm |
6.48mm |
9.90mm |
101.60mm |
80 | |
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