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
13.88/Pkg. of 100
Save 5% when you buy 4+
Save 10% when you buy 8+
Save 15% when you buy 24+
P-684
13.88/Pkg. of 100
7/16"-20 Red LDPE Threaded Cap - 0.443" Cap ID x 0.47" Inside L (Package of 100)
Item 41318
16.28/Pkg. of 100
Save 5% when you buy 4+
Save 10% when you buy 8+
Save 15% when you buy 24+
P-684
16.28/Pkg. of 100
5/8"-18 Red LDPE Threaded Cap - 0.63" Cap ID x 0.813" Inside L (Package of 100)
Item 41319
30.06/Pkg. of 100
Save 5% when you buy 4+
Save 10% when you buy 8+
Save 15% when you buy 24+
P-684
30.06/Pkg. of 100
3/4"-16 Red LDPE Threaded Cap - 0.755" Cap ID x 0.57" Inside L (Package of 100)
Item 41320
30.98/Pkg. of 100
Save 5% when you buy 4+
Save 10% when you buy 8+
Save 15% when you buy 24+
P-684
30.98/Pkg. of 100
7/8"-14 Red LDPE Threaded Cap - 0.88" Cap ID x 0.68" Inside L (Package of 100)
Item 41322
37.96/Pkg. of 100
Save 5% when you buy 4+
Save 10% when you buy 8+
Save 15% when you buy 24+
P-684
37.96/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
39.58/Pkg. of 100
Save 5% when you buy 4+
Save 10% when you buy 8+
Save 15% when you buy 24+
P-684
39.58/Pkg. of 100
3/4" NPT Red LDPE Threaded Cap - 1.038" Cap ID x 0.75" Inside L (Package of 100)
Item 41321
35.56/Pkg. of 100
Save 5% when you buy 4+
Save 10% when you buy 8+
Save 15% when you buy 24+
P-684
35.56/Pkg. of 100