Designed specifically to cover most American Standard Association, Navy and Military sizes, the StockCap line of ASA flange covers protects critical flange faces, preventing interior damage and contamination.

  • Resists weather, moisture and chemicals
  • Cushions against abrasive contact
  • Resists warping, swelling, tearing or splitting
  • Shipped immediately from stock (in Yellow)
  • Flanges and joints
  • Valves
  • Pipes and vessels
Shop Stock Sizes Online

ASA Flange Covers Diagram

ASA Flange Covers
Part Name Inside Diameter "A" (in) Inside Diameter "B" (in) Inside Length "C" (in)
350-6 3.480 0.400 2.485
375-8 3.750 0.500 2.750
387-8 3.870 0.540 2.860
425-7 4.250 0.460 3.260
462-9 4.660 0.500 3.620
487-10 4.870 0.680 3.900
500-9 5.000 0.625 4.000
525-12 5.250 0.760 4.250
600-10 6.000 0.675 4.500
612-13 6.120 0.825 5.110
650-14 6.500 0.900 5.500
700-12 7.000 0.800 6.000
750-14 7.500 0.900 6.500
825-19 8.250 1.300 7.200
900-15 9.000 1.000 8.030
1000-14 10.030 0.875 9.000
1000-20 10.030 0.925 9.000
1075-24 10.750 1.500 9.730
1100-16 11.000 1.000 10.050
1250-22 12.500 1.440 11.500

Step 2 — Choose a Color

Caps are manufactured in 8 standard colors for multiple materials. Certain popular sizes are also stocked in yellow for quick shipment. Custom materials are also available.

Stock Color Options
Quick Ship —
Typically the Next Day
Custom Color Options
Longer Lead Times and
Higher Minimums

*Custom color-matching
fees may apply.

Standard Color Options
Standard Lead Time
(~ 3 Weeks)

Step 3 — Choose a Material

Stocked Short Caps are made from a 75 durometer PVC with a smooth surface and glossy finish. However, these caps can be made in materials with a variety of characteristics and features as shown below. 

View Our Material Chart

Material Characteristics

1. Hardness

2. Gloss

3. Texture

4. Special Features
  • High Temperature Resistant
  • Highly Weather Resistant
  • Fire Resistant (UL Qualifiable)
  • Anti-Static
  • Dilatable
Quote / Samples

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