A Flanged gasket is different to a standard Gasket / Seal as one half of the gasket will sit over the edge of the ferrule holding it place more easily.

Sanitary Tri-Clamp (TC) Gaskets are used in the Food, Dairy, Beverage, Biotech, Pharmaceutical, and many other Sanitary Process industries to seal clamp connections in stationary sanitary pipe lines.
The name Tri-Clamp gasket comes from the Tri-Clover clamp which is used to hold a gasket in place.

KegLand stocks a wide range of Tri-Clover compatible Seals / Gaskets in Silicone, EPDM and Nylon.
1.5" TC Fittings - Common in beverage production.
2" TC Fittings - Common for distillation / brewery fittings.
3" TC Fittings - PolyPhoenix Distillation fittings.
4" TC Fittings - Kegmenter Lid Size.
8" TC Fittings - BrewBuilt X3 Lid Size.

Determining the Correct Tri-Clamp (TC) Gasket / Seal Size:
The Outer Diameter and Internal Diamater matter when pairing it with your Tri-Clover fittings. Measure accordingly.

TC Gasket Size (inch.)	OD of Gasket (inch.)	OD of Gasket (mm)	ID of Gasket (inch.)	ID of Gasket (mm)
0.5	0.992	25.20	0.37	9.40
0.75	0.992	25.20	0.62	15.75
1	1.984	50.39	0.87	22.10
1.5	1.984	50.39	1.37	34.80
2	2.516	63.91	1.87	47.50
2.5	3.047	77.39	2.37	60.20
3	3.579	90.91	2.87	72.90
4	4.682	118.92	3.834	97.38
8	8.602	218.49	7.782	197.66

Tri-Clover (TC) Ferrule Dimensions (The Stainless Steel Fittings)
It is important to remember that when referencing TC Metal parts, we are referring to the SIZE indicated below.
Most commonly this get's confused with A. So please order the correct part needed based on SIZE.

Size (inches)	Size (mm)	A (mm)	B (mm)	C (mm)
1/2	12.7	25.1	20	9.5
3/4	19.1	25.1	20	15.9
1	25.4	50.5	43.5	22.2
1-1/2	38.1	50.5	43.5	34.9
2	50.8	64	56.5	47.6
2-1/2	63.5	77.5	70.5	60.3
3	76.2	91	83.5	73
4	101.6	119	110	98.4
6	152.4	166.1	157	148.4
8	203.2	217.5	207.2	199.2

4 Inch Tri-Clover Fittings

4 Inch TC Kegmenter Lid with Ball Lock Posts, Floating Dip tube and PRV (Red 2.5Bar)

4 Inch TC Beaded Seal - Silicone

4 Inch TC Clamp - 2 Segments

4 Inch TC Stainless Steel End Cap

4 Inch TC Stainless Steel End Cap with 21mm Hole

4 Inch TC Stainless Mesh Screen PTFE (Teflon & 7 mesh)

4 Inch TC Clamp - 3 Segments

4 Inch TC Pressure Lid with 2 Inch TC Port

4 Inch TC Pre-Drilled Glycol Pressure Lid with 2 Inch TC Port

4 Inch TC Beaded Seal - EPDM

4 inch TC - Flanged Silicone Gasket Seal