Metric Dovetail O-ring Groove Design
Dovetail grooves are used to hold the O-ring in place during installation or maintenance. This groove design is relatively uncommon as it is expensive to machine and should not be used unless absolutely required. The dovetail groove construction is only recommended for O-rings with bigger cross sections, .139 inch (3,53 mm) and bigger.
Surface Finish X groove top and bottom : for liquids X = 32 micro inches (0.8 μm Ra)
for vacuum and gases X = 16 micro inches (0.4 μm Ra) 8,4 7,25 6,25 6,80 1,5 0,5
| Cross Section W |
Groove Depth E |
Groove Width F |
Radius R |
||
|---|---|---|---|---|---|
| mm | E+0/-0,05 | F2+/-0,05 | F1+/-0,05 | R1 | R2 |
| 4,0 | 3,20 | 3,10 | 3,40 | 0,8 | 0,25 |
| 5,0 | 4,15 | 3,85 | 4,10 | 0,8 | 0,25 |
| 5,33 | 4,40 | 4,10 | 4,35 | 0,8 | 0,25 |
| 6,0 | 5,05 | 4,55 | 4,95 | 0,8 | 0,4 |
| 7,5 | 6,40 | 5,60 | 6,00 | 1,5 | 0,4 |
| 8,4 | 7,25 | 6,25 | 6,80 | 1,5 | 0,5 |
| 8,5 | 7,35 | 6,35 | 6,90 | 1,5 | 0,5 |
| 9,5 | 8,20 | 7,05 | 7,60 | 1,5 | 0,5 |
| 10,0 | 8,70 | 7,40 | 7,95 | 1,5 | 0,5 |
groove sides: X = 63 micro inches (1.6 μm Ra) 9,0 7,80 6,70 7,25 1,5 0,5
Using Dovetail Seals for Metric O-Ring Applications
Metric dovetail grooves are specialized glands engineered to securely hold O-rings in place, preventing dislodgment during maintenance or use. These grooves are designed to keep the O-ring firmly seated within a face-type groove, reducing the risk of it falling out. While particularly beneficial for vacuum and other demanding applications, metric dovetail grooves can be complex and costly to manufacture. Therefore, their use is typically recommended only when absolutely necessary. Additionally, dovetail grooves are best suited for O-rings with cross-sections of 3.53mm or larger. Proper design and precise engineering are crucial for these types of grooves.
Metric dovetail grooves find applications across a broad range of industries, with specific uses varying based on project requirements and specifications.
O-Rings for Metric Dovetail Grooves
Metric dovetail grooves can accommodate a wide variety of rubber O-rings. Ace Seal provides standard and custom metric O-rings with customizable inner diameters, cross-sections, materials, hardness levels, and colors. Our custom components are tailored to meet your specific needs and application requirements. Whatever your sealing challenge, Ace Seal has the perfect O-ring solution.
Contact Ace Seal
Ace Seal is your trusted source for premium sealing products and accessories. Reach out to us for more information about O-rings compatible with metric dovetail grooves, or request a quote to start your order today
