LDPE Threaded Caps

These threaded caps protect pipe and tubes from low-impact damage, dirt, dust, and moisture. Ideal for low pressure applications, they provide a secure, positive seal to maintain cleanliness and prevent contamination during storage, transport, or handling. The knurled exterior ensures a firm grip, making installation and removal quick and easy, with no tools required.

  • LDPE
  • ASAE threads (41321 has NPT threads)
  • Knurled exterior for easy on/off application
  • Protects against moisture, dirt & dust
  • Positive seal for low pressure applications
  • Sold in full packages only
Item # Description Catalog Pg. Price Add to Cart
3/8"-24 Red LDPE Threaded Cap - 0.38" Cap ID x 0.47" Inside L (Package of 100)
Item 41317
13.48/Pkg. of 100
Save 5% when you buy 4+
Save 10% when you buy 8+
Save 15% when you buy 24+
NEW
13.48/Pkg. of 100
7/16"-20 Red LDPE Threaded Cap - 0.443" Cap ID x 0.47" Inside L (Package of 100)
Item 41318
15.8/Pkg. of 100
Save 5% when you buy 4+
Save 10% when you buy 8+
Save 15% when you buy 24+
NEW
15.8/Pkg. of 100
5/8"-18 Red LDPE Threaded Cap - 0.63" Cap ID x 0.813" Inside L (Package of 100)
Item 41319
29.18/Pkg. of 100
Save 5% when you buy 4+
Save 10% when you buy 8+
Save 15% when you buy 24+
NEW
29.18/Pkg. of 100
3/4"-16 Red LDPE Threaded Cap - 0.755" Cap ID x 0.57" Inside L (Package of 100)
Item 41320
30.08/Pkg. of 100
Save 5% when you buy 4+
Save 10% when you buy 8+
Save 15% when you buy 24+
NEW
30.08/Pkg. of 100
7/8"-14 Red LDPE Threaded Cap - 0.88" Cap ID x 0.68" Inside L (Package of 100)
Item 41322
36.86/Pkg. of 100
Save 5% when you buy 4+
Save 10% when you buy 8+
Save 15% when you buy 24+
NEW
36.86/Pkg. of 100
1-1/16"-12 Red LDPE Threaded Cap - 1.068" Cap ID x 0.75" Inside L (Package of 100)
Item 41323
38.42/Pkg. of 100
Save 5% when you buy 4+
Save 10% when you buy 8+
Save 15% when you buy 24+
NEW
38.42/Pkg. of 100
3/4" NPT Red LDPE Threaded Cap - 1.038" Cap ID x 0.75" Inside L (Package of 100)
Item 41321
34.52/Pkg. of 100
Save 5% when you buy 4+
Save 10% when you buy 8+
Save 15% when you buy 24+
NEW
34.52/Pkg. of 100