![](https://tryloctite-images-s3.s3.ap-south-1.amazonaws.com/images/downloadinf-icon.original.png)
![To ensure that the flange seal remains intact and leak-free for a prolonged time, design with LOCTITE anaerobic gasket sealants keeping in mind the following set of design considerations.](https://tryloctite-images-s3.s3.ap-south-1.amazonaws.com/images/R172-1810-Designing-with-LOCTITE-Anaerobic-Flan.original.jpg)
![](https://tryloctite-images-s3.s3.ap-south-1.amazonaws.com/images/img-surface-finish-top.original.jpg)
- Surface Roughness (Ra) 0.8 to 3.2 μm
- Max peak to valley height (Rmax) 4 to 30 μm
- Flatness 0.1 mm @ 400 mm
![](https://tryloctite-images-s3.s3.ap-south-1.amazonaws.com/images/img-surface-finish-bottom.original.jpg)
![](https://tryloctite-images-s3.s3.ap-south-1.amazonaws.com/images/img-flange-design.original.jpg)
Minimum overlapping flange width:
- Overall – 5 mm
- Around bolts – 2mm
![](https://tryloctite-images-s3.s3.ap-south-1.amazonaws.com/images/img-flange-design-bottom.original.jpg)
![](https://tryloctite-images-s3.s3.ap-south-1.amazonaws.com/images/img-gap.original.jpg)
- The maximum gap at surface imperfections must be within 0.1 to 0.25 mm. Blowout resistance decreases with increasing gaps.
![](https://tryloctite-images-s3.s3.ap-south-1.amazonaws.com/images/img-gap-bottom.original.jpg)
![](https://tryloctite-images-s3.s3.ap-south-1.amazonaws.com/images/img-assembly.original.jpg)
- Surface Roughness (Ra) 0.8 to 3.2 μm
- Max peak to valley height (Rmax) 4 to 30 μm
- Flatness 0.1 mm @ 400 mm
![](https://tryloctite-images-s3.s3.ap-south-1.amazonaws.com/images/img-assembly-bottom.original.jpg)
![](https://tryloctite-images-s3.s3.ap-south-1.amazonaws.com/images/img-seal-test.original.jpg)
- Surface Roughness (Ra) 0.8 to 3.2 μm
- Max peak to valley height (Rmax) 4 to 30 μm
- Flatness 0.1 mm @ 400 mm
![](https://tryloctite-images-s3.s3.ap-south-1.amazonaws.com/images/img-seal-test-bottom.original.jpg)