Gasket Knives | McMaster-Carr

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Cutting Angle

For Use On

Material

Cutting Pattern

Cutting Diameter

For Maximum Fiber Thickness

Export Control Classification Number (ECCN)

EAR99

For Maximum Rubber Thickness

Power Source

For Maximum PTFE Thickness

Ruler System of Measurement

Inch

Metric

For Maximum Graphite Thickness

Performance

DFARS Specialty Metals

REACH

RoHS

Compliant with Exemptions

Not Compliant

Cutting Board Width

18"

457 mm

For Maximum Cork Thickness

Shank Shape

Body Material

Cutting Board Length

Center Pin Length

Blade Type Included

Number of Center Pins

For Maximum Brass Thickness

0.04"

1/8"

For Maximum Copper Thickness

47 Products

Packing Seal Cutters

Cut packing seals to precise angles so they fit end to end without gaps, preventing leaks in pumps and valves. Set your preferred angle, packing size, and shaft diameter right on the cutting surface, which includes measurement tools. Then, like a paper cutter, slice down in one smooth motion for a clean cut with no frayed ends. Always cut 2-3mm long, then trim down if needed.

		Overall
For Max. OD	Cutting Angle	Wd.	Lg.	Blade Material	Includes		Each
1"	15°, 45°	6"	21"	Heat-Treated Steel	Allen Wrench Diameter/Circumference Scale Mounting Screws Vernier Caliper	0000000	0000000

Replacement Blades

		Each
Replacement Blades	0000000	000000

Circular Gasket Cutters


Style A	Style B	Style C

Cut soft materials such as PTFE, fiber, rubber, and cork.

(A) Powered by Hand (Manual), Hand Drill

Style A

Styles A and B simultaneously cut inside and outside diameters.

	For Max. Thick.						Shank
Cutting Dia. Range	PTFE	Graphite	Fiber	Rubber	Cork	Blade Material	Size	Shape	Bar Lg.	Includes		Each
5/8" to 6 1/2"	1/4"	1/4"	1/4"	1/4"	1/4"	Steel	5/16"	Square	6 1/2"	Two Blades with Holder	00000000	000000

(B) Powered by Hand (Manual), Hand Drill, Drill Press

Style B

Styles A and B simultaneously cut inside and outside diameters.

Cutters																Replacement Blades
	For Max. Thick.									Shank
Cutting Dia. Range	PTFE	Fiber	Rubber	Cork	Stainless Steel	Brass	Copper	Tin	Blade Material	Size	Shape	Bar Lg.	Includes		Each		Pair
1" to 24"	1/8"	1/8"	1/8"	1/8"	1/8"	1/8"	0.003"	1/8"	Steel	1/4"	Taper	13 1/4"	Two Blades with Holder	0000000	0000000	0000000	000000

Style C

Style C have a rotating blade that makes smooth, continuous cuts. The ratcheting handle also rotates, so you don’t need to twist your wrist or change your grip as you guide the blade in a circle.

Cutters											Replacement Blades
	For Max. Thick.
Cutting Dia. Range	PTFE	Fiber	Rubber	Cork	Blade Material	Bar Lg.	Includes	Features		Each	Pkg. Qty.		Pkg.
1 1/2" to 8 3/4"	3/16"	3/16"	3/16"	3/16"	Steel	5 7/8"	One Blade with Holder	Ratchet Handle	0000000	000000	2	000000000	00000

Precise-Cut Circular Gasket Cutters with Cutting Board

Cutter Shown in Use on Cutting Board


Style A	Style B

Style C

Ensure precise cuts with a measuring scale and adjustable blade depth. A rectangular base keeps material flat during cutting to prevent tears. The cutting board reseals itself after each cut.

(A) Includes One Curved, One Pointed, One Rounded-Tip, One Angled-Tip Blades

Image of Product. Front orientation. Gasket Cutters. Precise-Cut Circular Gasket Cutters with Cutting Board, Style A.

Style A cutters also cut strips up to 3_5/8" wide.

Curved blades are for cutting thin materials.

Pointed blades are for general purpose cutting.

Rounded-tip blades are for heavy duty cutting.

Angled-tip blades are for cutting rigid materials.

Bolt Hole Locators—Bolt-hole locators show you where to punch out material when making gaskets with bolt holes. They include patterns for 4, 6, 8, 12, and 16 bolt holes.

Dovetail Cutting Templates—Dovetail cutting templates are for cutting circular gaskets in sections held together by dovetail cutouts.

Cutters																Bolt Hole Locators		Dovetail Cutting Templates
		For Max. Thick.								Cutting Board
Cutting Dia. Range	Max. Cutting Wd.	PTFE	Graphite	Fiber	Rubber	Cork	Blade Material	Body Material	Ruler System of Measurement	Lg.	Wd.	Ctr. Pin Lg.	Includes		Each		Each		Each
1/4" to 6"	3 5/8"	3/4"	3/4"	3/4"	3/4"	3/4"	Steel	Plastic	Inch, Metric	6"	6"	1 3/16", 1 5/16"	Pin for Cutting Discs, Metal Case	0000000	0000000	00000000	000000	00000000	000000

Replacements for Gasket Cutters


Pointed Blades	Pkg. of 6	000000
Rounded-Tip Blades	Pkg. of 6	00000
Curved Blades	Pkg. of 6	00000
1-3/16" Length Center Pin	Each	0000
1-5/16" Length Center Pin	Each	0000
6" x 6" Cutting Board	Each	00000

(B) Includes Six Pointed, Six Rounded Tip Blades

Pointed blades are for general purpose cutting.

Rounded-tip blades are for heavy duty cutting.

Bolt Hole Locators—Bolt-hole locators show you where to punch out material when making gaskets with bolt holes. They include patterns for 4, 6, 8, 12, and 16 bolt holes.

Dovetail Cutting Templates—Dovetail cutting templates are for cutting circular gaskets in sections held together by dovetail cutouts.

Cutters															Bolt Hole Locators		Dovetail Cutting Templates
	For Max. Thick.								Cutting Board
Cutting Dia. Range	PTFE	Graphite	Fiber	Rubber	Cork	Blade Material	Body Material	Ruler System of Measurement	Lg.	Wd.	Ctr. Pin Lg.	Includes		Each		Each		Each
1/4" to 13"	3/4"	3/4"	3/4"	3/4"	3/4"	Steel	Brass	Inch	18"	18"	1 3/16", 1 7/16", 1 11/16"	Bolt Hole Locator, Cutting Knob, Dovetail Cutting Template, Pin Insertion Handle, Plastic case	00000000	0000000	00000000	000000	00000000	000000
1/4" to 25"	3/4"	3/4"	3/4"	3/4"	3/4"	Steel	Brass	Inch	18"	18"	1 3/16", 1 7/16", 1 11/16"	Bolt Hole Locator, Cutting Knob, Dovetail Cutting Template, Extension Arm, Pin Insertion Handle, Plastic case	0000000	000000	00000000	00000	00000000	00000
1/4" to 37"	3/4"	3/4"	3/4"	3/4"	3/4"	Steel	Brass	Inch	18"	18"	1 3/16", 1 7/16", 1 11/16"	Bolt Hole Locator, Cutting Knob, Dovetail Cutting Template, Pin Insertion Handle, Plastic case, Two Extension Arms	0000000	000000	00000000	00000	00000000	00000
1/4" to 49"	3/4"	3/4"	3/4"	3/4"	3/4"	Steel	Brass	Inch	18"	18"	1 3/16", 1 7/16", 1 11/16"	Bolt Hole Locator, Cutting Knob, Dovetail Cutting Template, Pin Insertion Handle, Plastic case, Three Extension Arms	00000000	000000	00000000	00000	00000000	00000
1/4" to 61"	3/4"	3/4"	3/4"	3/4"	3/4"	Steel	Brass	Inch	18"	18"	1 3/16", 1 7/16", 1 11/16"	Bolt Hole Locator, Cutting Knob, Dovetail Cutting Template, Four Extension Arms, Pin Insertion Handle, Plastic case	00000000	000000	00000000	00000	00000000	00000
6 mm to 635 mm	19 mm	19 mm	19 mm	19 mm	19 mm	Steel	Brass	Metric	457 mm	457 mm	1.2 mm, 1.4 mm, 1.7 mm	Bolt Hole Locator, Cutting Knob, Dovetail Cutting Template, Extension Arm, Pin Insertion Handle, Plastic case	00000000	000000	00000000	00000	00000000	00000

Replacements for Gasket Cutters


Pointed Blades	000000	Pkg. of 6	000000
Rounded-Tip Blades	000000	Pkg. of 6	00000
1-3/16" Long Center Pin	0000000	Each	00000
1-7/16" Long Center Pin	0000000	Each	00000
1-11/16" Long Center Pin	0000000	Each	00000
18" x 18" Cutting Board	000000	Each	00000
24" x 24" Cutting Board	00000000	Each	00000
30" x 30" Cutting Board	00000000	Each	00000

Pointed blades are for general purpose cutting.

Rounded-tip blades are for heavy duty cutting.

Bolt Hole Locators—Bolt-hole locators show you where to punch out material when making gaskets with bolt holes. They include patterns for 4, 6, 8, 12, and 16 bolt holes.

Dovetail Cutting Templates—Dovetail cutting templates are for cutting circular gaskets in sections held together by dovetail cutouts.

Cutters															Bolt Hole Locators		Dovetail Cutting Templates
	For Max. Thick.								Cutting Board
Cutting Dia. Range	PTFE	Graphite	Fiber	Rubber	Cork	Blade Material	Body Material	Ruler System of Measurement	Lg.	Wd.	Ctr. Pin Lg.	Includes		Each		Each		Each
1" to 37"	3/4"	3/4"	3/4"	3/4"	3/4"	Steel	Plastic	Inch, Metric	18"	18"	1 3/16", 1 7/16", 1 11/16"	Piercing Tool, Plastic case, Two Extension Arms	0000000	0000000	00000000	000000	00000000	000000

Accessories and Replacements for Gasket Cutters

Gasket Cutter Extension Arms—Extension arms are for cutting larger diameter gaskets with Style C.


Pointed Blades	0000000	Pkg. of 6	000000
Rounded-Tip Blades	0000000	Pkg. of 6	00000
1-3/16" Long Center Pin	0000000	Each	00000
1-7/16" Long Center Pin	0000000	Each	00000
1-11/16" Long Center Pin	0000000	Each	00000
18" x 18" Cutting Board	000000	Each	00000
24" x 24" Cutting Board	00000000	Each	00000
30" x 30" Cutting Board	00000000	Each	00000
37" to 49" Cutting Diameter Extension Arm	000000	Each	00000

Utility-Knife Style Circular Gasket and Hole Cutters

When the blade gets dull, snap it off to expose a new, sharp edge. This cutter has a utility knife mounted on a radius bar for precise cuts.

Cutters									Replacement Blades
	For Max. Thick.
Cutting Dia. Range	PTFE	Fiber	Rubber	Cork	Blade Material	No. of Segments per Blade		Each	Pkg. Qty.		Pkg.
2 13/16" to 12"	1/2"	1/2"	1/2"	1/2"	Steel	8	0000000	000000	10	00000000	000000

Fast-Cut Circular Gasket Cutters


Manual Vise Mount Cutters	Manual Bench Mount Cutters	Electric Bench Mount Cutters

Quickly turn out perfectly round gaskets. Designed for making batches of same-sized gaskets, these cutters rotate your material while they cut. Punch a hole in the center of your material, slip it onto the cutter, and hold it in place with the included nut. Use the built-in scale to set the blade to the exact diameter you need.

Manual Vise Mount Cutters

Manual cutters have a handle—turn it to cut and rotate your material.

Cutters									Bolt Hole Locators		Dovetail Cutting Templates
	For Max. Thick.
Cutting Dia. Range	PTFE	Fiber	Rubber	Cork	Blade Material	Body Material		Each		Each		Each
2" to 22"	1/8"	3/16"	3/16"	3/16"	Steel	Cast Iron, Steel	000000	000000000	00000000	000000	00000000	000000

Accessories and Replacements for Gasket Cutters

		Each
22"-42" Cutting Diameter Extension Arm	000000	0000000
42"- 62" Cutting Diameter Extension Arm	000000	000000
Replacement Spindle Assembly with Knurled Nut	0000000	00000
Replacement Top and Bottom Cutting Wheels	0000000	000000

Manual Bench Mount Cutters

Manual cutters have a handle—turn it to cut and rotate your material.

Cutters																	Bolt Hole Locators		Dovetail Cutting Templates
	For Max. Thick.
Cutting Dia. Range	PTFE	Fiber	Rubber	Cork	Steel	Iron	Stainless Steel	Brass	Copper	400 Nickel	Tin	Zinc	Blade Material	Body Material		Each		Each		Each
3" to 28"	1/8"	3/16"	3/16"	1/4"	0.04"	0.04"	0.03"	0.04"	1/16"	0.03"	0.04"	0.04"	Steel	Cast Iron, Steel	000000	000000000	00000000	000000	00000000	000000

Accessories and Replacements for Gasket Cutters

		Each
28"-54" Cutting Diameter Extension Arm	000000	0000000
54"-80" Cutting Diameter Extension Arm	000000	000000
Replacement Spindle Assembly with Knurled Nut	0000000	00000
Replacement Top and Bottom Cutting Wheels	0000000	000000

Electric Bench Mount Cutters

Electric cutters automatically turn and cut your material when you flip a switch, so they’re easier to use than manual cutters.

Cutters										Bolt Hole Locators		Dovetail Cutting Templates
	For Max. Thick.
Cutting Dia. Range	PTFE	Fiber	Rubber	Cork	Blade Material	Body Material	Voltage, V AC		Each		Each		Each
2" to 62"	1/8"	3/16"	3/16"	3/16"	Steel	Cast Iron, Steel	120	0000000	000000000	00000000	000000	00000000	000000

Replacement Cutting Wheels