• Straight Paper Caps
Straight Paper Caps for masking are environmentally friendly and economical. Made of recyclable paper, the closures withstand up to 400 ºF (204 ºC), making them ideal for low-to-high temperature applications. Straight Paper Caps may have minor dimensional variation due to the effect of changes in relative humidity around the material

Manufactured in tan paper, these masking caps are sized to fit 1/8 thru 1-1/2 flared tube fittings or 5/16 thru 1-7/8 tube O's.
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Item #

Item Name

Inside Diameter

Inside Length

To Fit Tube Size

N/A 0.303 Inch (in) Inside Diameter Straight Paper Cap N/A 0.303 in7.7 mm N/A 0.370 in9.4 mm N/A 5/16 in
N/A 0.354 Inch (in) Inside Diameter Straight Paper Cap N/A 0.354 in9.0 mm N/A 0.374 in9.5 mm N/A 3/8 in
N/A 0.417 Inch (in) Inside Diameter Straight Paper Cap N/A 0.417 in10.6 mm N/A 0.453 in11.5 mm N/A 7/16 in
N/A 0.469 Inch (in) Inside Diameter Straight Paper Cap N/A 0.469 in11.90 mm N/A 0.512 in13.0 mm N/A 1/2 in
N/A 0.598 Inch (in) Inside Diameter Straight Paper Cap N/A 0.598 in15.2 mm N/A 0.528 in13.4 mm N/A 5/8 in
N/A 0.717 Inch (in) Inside Diameter Straight Paper Cap N/A 0.717 in18.2 mm N/A 0.673 in17.1 mm N/A 3/4 in
N/A 0.811 Inch (in) Inside Diameter Straight Paper Cap N/A 0.811 in20.60 mm N/A 0.823 in20.9 mm N/A 7/8 in
N/A 0.957 Inch (in) Inside Diameter Straight Paper Cap N/A 0.957 in24.3 mm N/A 0.862 in21.9 mm N/A 1 in
N/A 1.205 Inch (in) Inside Diameter Straight Paper Cap N/A 1.205 in30.6 mm N/A 0.996 in25.3 mm N/A 1-5/16 in
N/A 1.543 Inch (in) Inside Diameter Straight Paper Cap N/A 1.543 in39.2 mm N/A 1.197 in30.4 mm N/A 1-5/8 in
N/A 1.827 Inch (in) Inside Diameter Straight Paper Cap N/A 1.827 in46.4 mm N/A 0.913 in23.2 mm N/A 1-7/8 in
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