Internal Grooving Lathe Tools for O-Rings


0.031"-0.071" Groove Wd.

0.098"-0.243" Groove Wd.

Cut small grooves inside a workpiece for insertion and removal of O-rings. Tools have flats on the shank for quick alignment.
For technical drawings and 3-D models, click on a part number.
Groove Wd. | Min. Hole Dia. | Max. Hole Dp. | Offset | Taper | Shank Dia. | Overall Lg. | Material | For Use On | Each | |
0.031" | 1/4" | 5/8" | 0.05" | __ | 1/4" | 2 1/2" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel | 0000000 | 000000 |
0.041" | 3/8" | 5/8" | 0.1" | __ | 3/8" | 2 1/2" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
0.057" | 3/8" | 3/4" | 0.1" | __ | 3/8" | 2 1/2" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
0.064" | 3/8" | 3/4" | 0.1" | __ | 3/8" | 2 1/2" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
0.071" | 3/8" | 1" | 0.1" | __ | 3/8" | 2 1/2" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
0.098" | 1/4" | 1/2" | 0.1" | 5° | 1/4" | 2 1/2" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
0.143" | 1/4" | 9/16" | 0.1" | 5° | 1/4" | 2 1/2" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
0.146" | 1/4" | 5/8" | 0.1" | 5° | 1/4" | 2 1/2" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
0.176" | 3/8" | 3/4" | 0.115" | 5° | 3/8" | 2 1/2" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
0.21" | 3/8" | 13/16" | 0.115" | 5° | 3/8" | 2 1/2" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
0.243" | 3/8" | 15/16" | 0.115" | 5° | 3/8" | 2 1/2" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel | 0000000 | 00000 |
Carbide Dovetail End Mills for O-Rings


Create dovetail grooves that allow O-rings to flex without falling out of place. Made of solid carbide, they are harder, stronger, and more wear resistant than high-speed steel and cobalt steel for the longest life and best finish on hard material. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent the end mill from breaking.
Mill | ||||||||
---|---|---|---|---|---|---|---|---|
For O-Ring Wd. | Dia. | Thick. | Shank Dia. | Overall Lg. | Flute Spacing | For Use On | Each | |
Uncoated | ||||||||
2 Flute—24° Chamfer Angle | ||||||||
0.07" | 0.086" | 0.051" | 3/16" | 2 1/2" | Equal | Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 000000 |
0.093" | 0.126" | 0.075" | 3/16" | 2 1/2" | Equal | Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 00000 |
1.78mm | 1.8mm | 1.3mm | 4.8mm | 63.5mm | Equal | Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 00000 |
3 Flute—24° Chamfer Angle | ||||||||
0.103" | 0.14" | 0.082" | 3/16" | 2 1/2" | Equal | Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 00000 |
0.125" | 0.177" | 0.102" | 1/4" | 2 1/2" | Equal | Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 00000 |
0.139" | 0.18" | 0.112" | 1/4" | 2 1/2" | Equal | Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 00000 |
0.187" | 0.279" | 0.154" | 5/16" | 2 1/2" | Equal | Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 00000 |
0.21" | 0.293" | 0.172" | 5/16" | 2 1/2" | Equal | Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 00000 |
0.25" | 0.356" | 0.212" | 3/8" | 2 1/2" | Equal | Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 00000 |
0.275" | 0.369" | 0.232" | 3/8" | 2 1/2" | Equal | Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 00000 |
0.375" | 0.497" | 0.317" | 1/2" | 3" | Equal | Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel | 0000000 | 00000 |