31235-7004 by Garlock | GRAPH-LOCK® | Style 3123/3125 | 0.030in Thick | 60in x 60in | 10 Sheets

BENEFITS:

Excellent Resistance Pure exfoliated graphite flake material excels in extreme conditions, withstanding heat, pressure and aggressive chemicals Proven fire safe Reliable seal Seals easily under moderate bolt load, offers superior torque retention Retains dimensional stability in high temperatures; seals tightly even during pressure fluctuations Versatility Available in two grades - industrial grade is 98% pure; nuclear grade is 99.5% pure Available as standard homogeneous sheet or metal-inserted sheet for applications requiring extra strength

Typical Physical Properties

		3124/3126	3123/3125	3125 SS	3125 TC	3128
Description		316SS Wire Inserted	Honogeneous/ Laminated	0.002" 316SS Foil insert	0.004" 316SS Tang Inserted	Reinforced Graphite
Temperature1	Minimum Max. in atmosphere Max. in steam Pressure, Max.1 psig (bar)	-400°F (-240°C) 850°F (454°C) 1200°F (650°C) 2,000 (140)	-400°F (-240°C) 850°F (454°C) 1200°F (650°C) 2,000 (140)	-400°F (-240°C) 850°F (454°C) 1200°F (650°C) 2,000 (140)	-400°F (-240°C) 850°F (454°C) 1200°F (650°C) 2,000 (140)	-400°F (-240°C) 850°F (454°C) 1200°F (650°C) 2,000 (140)
PxT, max1	(psig x °F): 1/32", 1/16" (bar x °C): (0.8mm, 1.6mm) (1/8" (3.2mm)	700,000(25,000)350,000 (12,000)	700,000(25,000)350,000 (12,000)	700,000(25,000)350,000 (12,000)	700,000(25,000)350,000 (12,000)	700,000(25,000)350,000 (12,000)
Sealability (ASTM F37B)2 ASTM Fuel A ml/hr Nitrogen ml/hr		1.53 1.5	0.2/0.3 0.5	0.25 0.2	0.33 0.3	0.2 0.1
Gas Permeabilitycc/min (DIN 3535 Part 4)4		0.4	0.4	0.4	0.4	0.4
Creep Relaxation(ASTM F38) %		20	5/10	12	15	10
Compressibility Range(ASTM F36) %		35	40	35	35	30-40
Recovery (ASTM F36) %		20	>15	>20	>20	20
Tensile Strength5 psi(ASTM F152) (N/mm2)		2,300(15.9)	600(4)	4,5005(31)	3,500(24)	4,500(31)

Order Code (Part Number)	Style	Thickness (in.)	Width (in.)	Length (in.)
31235-7004	3123/3125	0.030"	60"	60"
31255-7001	3123/3125	0.060"	40"	40"
31235-7005	3123/3125	0.060"	60"	60"
31255-7002	3123/3125	0.120"	40"	40"
31255-7133	3123/3125	0.120"	60"	60"

NOTES:
1) Based on ANSI RF flanges at our preferred torque. Maximum temperature of +1,000°F (+540°C) for GRAPH-LOCK® HT. Consult Garlock Applications Engineering when approaching maximum pressure or 50% of maximum PxT.
2) ASTM F37B Sealability, milliliters/hour (1/32" thick)
ASTM Fuel A (isooctane): Gasket load = 500 psi (3.5 N/mm2),
Internal pressure = 9.8 psig (0.7 bar)
Nitrogen: Gasket load = 3,000 psi (20.7 N/mm2),
Internal pressure = 30 psig (2 bar)
3) 1,000 psi gasket load
4) DIN 3535 Part 4 Gas Permeability, cc/min. (1/16" thick)
Nitrogen: Gasket load = 4,640 psi (32 N/mm2),
Internal pressure = 580 psig (40 bar)
5) 1/32" only (thicker gaskets have lower tensile due to metal construction)
* Values do not constitute specification limits
Refer to "Military Specifications" section under "Gasketing Terms" for order/inquiry requirements. To ensure receipt of product with the required DTL 24696 branding, certification will be required; associated fees based on quantity.