The Stainless Steel Reducing Lap Joint Exhaust Clamp is a specialized, heavy-duty clamping solution designed to create a secure, sealed, and vibration-resistant connection between two exhaust pipes of different diameters.
Components of lap joint exhaust clamp
Bandl:75mm wide,0.6mm thickness. 200 series, 300 series stainless steel or stainless steel (430) and aluminum plate material
Bolts: M10 hexagonal bolt steel carbon galvanized, strength 8.8
Nut:Hexagonal nut, galvanized carbon steel or stainless steel
Pad block:Aluminum alloy block and full Q235 material semicircular block
| Size |
ID (mm) |
OD (mm) |
Height (mm) |
| 2" | 50.8 | 55.8 | 75 |
| 2 1/4" | 57.15 | 62.15 | 75 |
| 2.5" | 63.5 | 68.5 | 75 |
| 2 3/4" | 69.85 | 74.85 | 75 |
| 3" | 76.2 | 81.2 | 75 |
| 3 1/2" | 88.9 | 93.9 | 75 |
| 4" | 101.6 | 106.6 | 75 |
| 4 1/2" | 114.3 | 119.3 | 75 |
| 5" | 127 | 132 | 75 |
| 5.5" | 138.7 | 143.7 | 75 |
| 6" | 152.4 | 157.4 | 75 |
| 7" | 177.8 | 182.8 | 75 |
How It Works?
Stainless Steel Construction: The entire clamp band and housing are typically made from grades like 304 or 409 stainless steel. This ensures long-term durability, resistance to rust from road salts and weather, and the ability to withstand the intense heat of exhaust systems without degrading.
Reducing/Conical Design: This is the defining characteristic. The clamp band itself is not a perfect circle; it is formed or rolled into a conical shape that matches the transition between the two pipe sizes. When tightened, it applies even pressure across the tapered section of the larger pipe.
360-Degree Sealing: Like standard lap clamps, it provides uniform pressure around the entire circumference of the joint. This eliminates the gaps and weak points common with traditional U-bolt clamps, which can only apply pressure at specific contact points.
Heavy-Duty Fasteners: It utilizes high-tensile bolts (often Grade 8.8 or higher) and a reinforced housing or "I-beam" spacer to withstand the significant torque required to properly seal a reducing joint without the hardware failing or deforming.
Application of lap joint exhaust clamp
Aftermarket Exhaust System Installation: The most common application. It is used to connect new performance components (like mufflers, catalytic converters, or resonator tips) to the existing factory pipes, which often have different diameters.
Exhaust Repair and Modification: When a section of a corroded pipe is cut out and replaced with a new piece, or when a system is being modified for better flow, reducers and these specialized clamps are used to join the mismatched sections seamlessly.
Advantages Over Alternatives
Superior Seal: Far less prone to leaks than using two U-bolt clamps on a reducer sleeve.
Professional Finish: Provides a clean, OEM-like appearance compared to makeshift solutions.
Ease of Installation: Simplifies alignment and allows for some adjustment during fitting.
Durability: Stainless steel construction ensures the clamp lasts as long as the exhaust system itself.
Package of lap joint exhaust clamp
1.white box+carton+pallet
2.customized color box+carton+pallet
We are a professional hose clamp manufacturer in China with 20 years of industry expertise, dedicated to providing various types, high-quality and cost-effective fastening solutions to global customers.[ read more ]
Contact Person： Vivian Zhang
Tel：862269629980
E-mail: vivian@rockclamp.com
Add：D1-403 Testing and Certification Park, Xiqing District, Tianjin, China
