O-Ring, Rubber, Square, OD=1-7/8" (48mm), ID=1-11/16" (43mm)
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Contiguous US Customers:
All items we sell ship for free within the Contiguous US. Shipping will be via the cheapest shipping method which will vary depending on the items in your order. During checkout, you may also be shown other optional faster shipping choices.
US Customers in Hawaii and Alaska:
Free shipping applies to almost all products. A few large telescopes and mounts are excluded from this free shipping offer. For these items, please contact us to obtain a shipping quote before you check out using the online shopping cart.
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- Buy 2 for $1.75 each and save 13%
Rubber O-ring with square cross section profile. Sold individually.
If the male SCT thread on your telescope is shorter than the female SCT threads on an SCT diagonal, then the diagonal will not lock and will continue to rotate freely. Inserting this rubber O ring into the SCT adapter on the diagonal and then screwing it on to the telescope will overcome this issue. Depending on the difference in lengths of the SCT threads on either side (the telescope and the diagonal), you may need to stack more than one O-ring.
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Hide Found a better Shipped Price on Frontend? | No |
Rubber O-ring with square cross section profile. Sold individually.
If the male SCT thread on your telescope is shorter than the female SCT threads on an SCT diagonal, then the diagonal will not lock and will continue to rotate freely. Inserting this rubber O ring into the SCT adapter on the diagonal and then screwing it on to the telescope will overcome this issue. Depending on the difference in lengths of the SCT threads on either side (the telescope and the diagonal), you may need to stack more than one O-ring.
| Free Shipping Graphic | Free US Shipping |
|---|---|
| Hide Found a better Shipped Price on Frontend? | No |
O-Ring, Rubber, Square, OD=1-7/8" (48mm), ID=1-11/16" (43mm)