Compare technology configurations, size envelopes, and weight profiles to find the optimal high-integrity metal seal connector for your piping application.
Understanding the core operational envelopes, size limits, and key advantages of Taper-Lok® and CofferLok™ connector systems relative to standard ASME flange designs.
| Specification | Taper-Lok® Flange | CofferLok™ Clamp | Standard ASME Flange |
|---|---|---|---|
| Sealing Principle | Self-energizing, wide-area metal taper ring | Self-energizing, metal taper ring | Gasket compression (ribbon, RTJ or spiral wound) |
| Size Range | 1/2" to 60" (Custom configurations available) | 1/2" to 30" (Compact high-pressure range) | 1/2" to 24" (ASME B16.5) / 26"+ (ASME B16.47) |
| Pressure Classes | Class 150 to Class 2500+ | Class 150 to Class 10000+ | Class 150 to Class 2500 |
| Weight Savings | Up to 75% | Up to 80% | Reference baseline (0% savings) |
| Space / Footprint | Compact outer diameter and reduced length | Highly compact 4-bolt clamp envelope | Large diameter, requires significant clear zone |
| Maintenance Cycle | Reusable seal ring, no bolt tension relaxation | Rapid 4-bolt access, reusable ring | Gasket replaced every lifecycle, frequent retorquing |
Input your line requirements below to get instant sizing recommendations and estimated mechanical weight savings compared to conventional flange assemblies.
Review comprehensive nominal dimensions, rating coefficients, and gasket numbers for the Taper-Lok® and CofferLok™ product ranges.
| NPS (in) | ASME Rating | Outer Dia (in) | Total Length (in) | Seal Ring No. | Bolt Qty & Size |
|---|---|---|---|---|---|
| 2" | Class 900 | 6.50" | 5.25" | TR-14 | 8 x 7/8" |
| 3" | Class 900 | 7.75" | 6.00" | TR-20 | 8 x 1" |
| 4" | Class 900 | 9.25" | 7.25" | TR-26 | 8 x 1-1/8" |
| 6" | Class 900 | 12.50" | 9.50" | TR-38 | 12 x 1-1/8" |
| 8" | Class 900 | 15.00" | 11.25" | TR-48 | 12 x 1-3/8" |
| NPS (in) | ASME Rating | Clamp Width (in) | Overall Length (in) | Seal Ring No. | Stud Qty & Size |
|---|---|---|---|---|---|
| 2" | Class 1500 | 5.75" | 6.50" | CR-14 | 4 x 7/8" |
| 3" | Class 1500 | 7.10" | 7.75" | CR-20 | 4 x 1-1/8" |
| 4" | Class 1500 | 8.50" | 9.00" | CR-26 | 4 x 1-1/4" |
| 6" | Class 1500 | 11.80" | 11.75" | CR-38 | 4 x 1-1/2" |
| 8" | Class 1500 | 14.25" | 14.00" | CR-48 | 4 x 1-3/4" |