Garlock Graph-Lock 3128 Hochdruk Ring Gasket

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Garlock Graph-Lock 3128 Hochdruk Ring Gasket

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GRAPH-LOCK® 3128 HOCHDRUCK® is a multi-layer, high strength sheet material composed of .020” thick layers of high purity flexible graphite (carbon >99.85%) and .002” thick layers of 316 stainless steel foil insert. It provides high compressive strength, blow-out resistance, excellent handling properties, and improved tightness. Download our ring gasket guide here.

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PERFORMANCE & SPECIFICATIONS

Performance

Min Temperature (F) -400°
Max Temperature (F) 850°
Max Pressure (PSI) 2000

Features and Benefits

Pure exfoliated graphite flake material excels in extreme conditions, withstanding heat, pressure, and aggressive chemicals
Proven fire-safe
Seals easily under moderate bolt load, offers superior torque retention
Retains dimensional stability in high temperatures; seals tightly even during pressure fluctuations

Material Datasheets

Graph-Lock 3128 Hochdruk

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PART NUMBER	Nominal Pipe Size	Pressure Rating (lbs)	Flange Standard (ASME)	Thickness (In.)	Inner Diameter (In.)	Outer Diameter (In.)	Ships Within	PRICE	ADD TO CART
1/2" 150# 1/16" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1/2 Pressure Rating (lbs) 150 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/16 Inner Diameter (In.) 0.840 Outer Diameter (In.) 1.880 Ships Within 1-2 Days See more GK-RS-NCJ-F8Q9-RE20-NYGF	1/2	150	ASME B16.5	1/16	0.840	1.880	1-2 Days	$3.86 x 3 $3.51 x 10 $2.01 x 30	Starting at: $2.01	PRICE QTY $11.58
1/2" 150# 1/8" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1/2 Pressure Rating (lbs) 150 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/8 Inner Diameter (In.) 0.840 Outer Diameter (In.) 1.880 Ships Within 1-2 Days See more GK-RS-NCJ-F8Q9-RE20-15Y3	1/2	150	ASME B16.5	1/8	0.840	1.880	1-2 Days	$5.08 x 3 $4.62 x 7 $3.39 x 20	Starting at: $3.39	PRICE QTY $15.23
1/2" 300# 1/16" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1/2 Pressure Rating (lbs) 300 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/16 Inner Diameter (In.) 0.840 Outer Diameter (In.) 2.120 Ships Within 1-2 Days See more GK-RS-NCJ-F8Q9-G35E-NYGF	1/2	300	ASME B16.5	1/16	0.840	2.120	1-2 Days	$4.23 x 3 $3.84 x 10 $2.65 x 20	Starting at: $2.65	PRICE QTY $12.69
1/2" 300# 1/8" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1/2 Pressure Rating (lbs) 300 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/8 Inner Diameter (In.) 0.840 Outer Diameter (In.) 2.120 Ships Within 1-2 Days See more GK-RS-NCJ-F8Q9-G35E-15Y3	1/2	300	ASME B16.5	1/8	0.840	2.120	1-2 Days	$5.76 x 2 $5.23 x 7 $4.30 x 15	Starting at: $4.30	PRICE QTY $11.51
3/4" 150# 1/16" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 3/4 Pressure Rating (lbs) 150 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/16 Inner Diameter (In.) 1.060 Outer Diameter (In.) 2.250 Ships Within 1-2 Days See more GK-RS-NCJ-G56P-9CD0-NYGF	3/4	150	ASME B16.5	1/16	1.060	2.250	1-2 Days	$4.46 x 3 $4.05 x 10 $2.85 x 20	Starting at: $2.85	PRICE QTY $13.38
3/4" 150# 1/8" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 3/4 Pressure Rating (lbs) 150 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/8 Inner Diameter (In.) 1.060 Outer Diameter (In.) 2.250 Ships Within 1-2 Days See more GK-RS-NCJ-G56P-9CD0-15Y3	3/4	150	ASME B16.5	1/8	1.060	2.250	1-2 Days	$6.17 x 2 $5.61 x 7 $4.66 x 15	Starting at: $4.66	PRICE QTY $12.33
3/4" 300# 1/16" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 3/4 Pressure Rating (lbs) 300 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/16 Inner Diameter (In.) 1.060 Outer Diameter (In.) 2.620 Ships Within 1-2 Days See more GK-RS-NCJ-G56P-3983-NYGF	3/4	300	ASME B16.5	1/16	1.060	2.620	1-2 Days	$5.14 x 3 $4.67 x 7 $3.44 x 20	Starting at: $3.44	PRICE QTY $15.42
3/4" 300# 1/8" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 3/4 Pressure Rating (lbs) 300 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/8 Inner Diameter (In.) 1.060 Outer Diameter (In.) 2.620 Ships Within 1-2 Days See more GK-RS-NCJ-G56P-3983-15Y3	3/4	300	ASME B16.5	1/8	1.060	2.620	1-2 Days	$12.79 x 2 $8.84 x 5 $6.40 x 10	Starting at: $6.40	PRICE QTY $25.57
1" 150# 1/16" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1 Pressure Rating (lbs) 150 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/16 Inner Diameter (In.) 1.310 Outer Diameter (In.) 2.620 Ships Within 1-2 Days See more GK-RS-NCJ-E4XU-VETT-NYGF	1	150	ASME B16.5	1/16	1.310	2.620	1-2 Days	$5.15 x 3 $4.69 x 7 $3.45 x 20	Starting at: $3.45	PRICE QTY $15.46
1" 150# 1/8" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1 Pressure Rating (lbs) 150 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/8 Inner Diameter (In.) 1.310 Outer Diameter (In.) 2.620 Ships Within 1-2 Days See more GK-RS-NCJ-E4XU-VETT-15Y3	1	150	ASME B16.5	1/8	1.310	2.620	1-2 Days	$12.80 x 2 $8.85 x 5 $6.41 x 10	Starting at: $6.41	PRICE QTY $25.60
1" 300# 1/16" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1 Pressure Rating (lbs) 300 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/16 Inner Diameter (In.) 1.310 Outer Diameter (In.) 2.880 Ships Within 1-2 Days See more GK-RS-NCJ-E4XU-R7WZ-NYGF	1	300	ASME B16.5	1/16	1.310	2.880	1-2 Days	$5.69 x 3 $5.17 x 7 $4.24 x 15	Starting at: $4.24	PRICE QTY $17.07
1" 300# 1/8" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1 Pressure Rating (lbs) 300 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/8 Inner Diameter (In.) 1.310 Outer Diameter (In.) 2.880 Ships Within 1-2 Days See more GK-RS-NCJ-E4XU-R7WZ-15Y3	1	300	ASME B16.5	1/8	1.310	2.880	1-2 Days	$13.79 x 2 $10.79 x 4 $7.26 x 10	Starting at: $7.26	PRICE QTY $27.58
1.25" 150# 1/16" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1-1/4 Pressure Rating (lbs) 150 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/16 Inner Diameter (In.) 1.660 Outer Diameter (In.) 3.000 Ships Within 1-2 Days See more GK-RS-NCJ-8WTN-QTZ0-NYGF	1-1/4	150	ASME B16.5	1/16	1.660	3.000	1-2 Days	$6.96 x 2 $6.33 x 5 $4.49 x 15	Starting at: $4.49	PRICE QTY $13.92
1.25" 150# 1/8" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1-1/4 Pressure Rating (lbs) 150 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/8 Inner Diameter (In.) 1.660 Outer Diameter (In.) 3.000 Ships Within 1-2 Days See more GK-RS-NCJ-8WTN-QTZ0-15Y3	1-1/4	150	ASME B16.5	1/8	1.660	3.000	1-2 Days	$9.92 x 2 $9.01 x 4 $7.70 x 10	Starting at: $7.70	PRICE QTY $19.83
1.25" 300# 1/16" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1-1/4 Pressure Rating (lbs) 300 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/16 Inner Diameter (In.) 1.660 Outer Diameter (In.) 3.250 Ships Within 1-2 Days See more GK-RS-NCJ-8WTN-63DR-NYGF	1-1/4	300	ASME B16.5	1/16	1.660	3.250	1-2 Days	$7.54 x 2 $6.85 x 5 $4.99 x 15	Starting at: $4.99	PRICE QTY $15.08
1.25" 300# 1/8" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1-1/4 Pressure Rating (lbs) 300 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/8 Inner Diameter (In.) 1.660 Outer Diameter (In.) 3.250 Ships Within 1-2 Days See more GK-RS-NCJ-8WTN-63DR-15Y3	1-1/4	300	ASME B16.5	1/8	1.660	3.250	1-2 Days	$15.37 x 2 $13.97 x 3 $9.47 x 7	Starting at: $9.47	PRICE QTY $30.74
1.5" 150# 1/16" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1-1/2 Pressure Rating (lbs) 150 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/16 Inner Diameter (In.) 1.910 Outer Diameter (In.) 3.380 Ships Within 1-2 Days See more GK-RS-NCJ-3TR9-G2Q9-NYGF	1-1/2	150	ASME B16.5	1/16	1.910	3.380	1-2 Days	$7.87 x 2 $7.16 x 5 $5.94 x 10	Starting at: $5.94	PRICE QTY $15.74
1.5" 150# 1/8" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1-1/2 Pressure Rating (lbs) 150 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/8 Inner Diameter (In.) 1.910 Outer Diameter (In.) 3.380 Ships Within 1-2 Days See more GK-RS-NCJ-3TR9-G2Q9-15Y3	1-1/2	150	ASME B16.5	1/8	1.910	3.380	1-2 Days	$19.81 x 1 $14.52 x 3 $9.99 x 7	Starting at: $9.99	PRICE QTY $19.81
1.5" 300# 1/16" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1-1/2 Pressure Rating (lbs) 300 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/16 Inner Diameter (In.) 1.910 Outer Diameter (In.) 3.750 Ships Within 1-2 Days See more GK-RS-NCJ-3TR9-S36D-NYGF	1-1/2	300	ASME B16.5	1/16	1.910	3.750	1-2 Days	$8.84 x 2 $8.04 x 4 $6.77 x 10	Starting at: $6.77	PRICE QTY $17.69
1.5" 300# 1/8" Thk Graph-Lock 3128 Hochdruk ASME B16.5 Ring Gasket	Nominal Pipe Size 1-1/2 Pressure Rating (lbs) 300 Flange Standard (ASME) ASME B16.5 Thickness (In.) 1/8 Inner Diameter (In.) 1.910 Outer Diameter (In.) 3.750 Ships Within 1-2 Days See more GK-RS-NCJ-3TR9-S36D-15Y3	1-1/2	300	ASME B16.5	1/8	1.910	3.750	1-2 Days	$21.60 x 1 $16.15 x 3 $12.68 x 5	Starting at: $12.68	PRICE QTY $21.60