Agena AstroProducts Winter Sale

O-Ring Rubber Spacer for SCT Diagonals - Square Cross Section with OD=1-7/8" (48mm) & ID=1-11/16" (43mm)

Our Price: $2.00

Sale Price: $1.60

Free shipping for this item in the US Click here for more info

Continental US Customers:
All items we sell ship for free within the Continental 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.

International Customers:
Free shipping does not apply to international orders. During check-out, you will be presented with several shipping choices and costs. However, the export of some items may be restricted outside the US due to size or manufacturer restrictions.

In stock (10+ Available)
Ships by Next Business Day
Our Product ID: IHS-AH-ORING2
Manufacturer SKU: -
Item Can Ship: Worldwide
O-Ring Rubber Spacer for SCT Diagonals - Square Cross Section with OD=1-7/8" (48mm) & ID=1-11/16" (43mm)

More Views

Product Details

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.

Useful Resources

Specifications:

  • Nominal Inside Diameter: 1-11/16 in (1.68 in, 42.86 mm)
  • Nominal Outside Diameter: 1-7/8 in (1.88 in, 47.62 mm)
  • Nominal Width: 3/32 in (0.09 in, 2.38 mm)
  • Cross Section Shape: Square
  • Material: Buna-N (Nitrile Rubber)
  • Temperature Range: -30 to 250° F
  • Hardness: 70A Shore Durometer
  • Color: Black

Product Questions & Answers

No questions yet. Be the first to Ask a Question.