Air Connections: Types 1,2,3,4,&7

Air Connections: Types 1, 2, 3, 4 & 7

For endless seals, the standard location for the air connection is on the underside that mates with the mounting surface. For seals with closed solid ends, the air connection can either be on the underside or extending out of one end. For some Types 2, 3 and 4 profiles a third location, in the sidewall, is available (consult Pawling for feasibility). The standard profiles section lists which air connections are available for each profile. Some of the air connections are more resistant to abusive handling than others. In these cases, consult Pawling for air connection selection.

	Type AC1A, AC1C	Type AC1B, AC1D

Type 1A: 9/32" diameter clearance hole required (break edge or counter sink). Type 1B: 9/32" diameter clearance hole required (break edge or counter sink). Type 1C: 11/32" diameter clearance hole required (break edge or counter sink). Type 1D: 11/32" diameter clearance hole required (break edge or counter sink).

	Type AC2

Type AC3A	Type AC3B

Type AC2: 13/32" diameter clearance hole required. Crimped Ferrule is not included on some silicone seals.

Type AC3A: 1/2" diameter clearance hole required. Crimped Ferrule is not included on some silicone seals.

Type AC3B: 19/32" diameter clearance hole required.

	Type AC4A

Type AC4B	Type 5

Type AC4A: 7/16" diameter clearance hole with 31/32"diameter x 5/16" deep counterbore for nut and washer or 31/32" diameter clearance for entire assembly.

Type AC4B: 1/2" diameter clearance hole with 31/32" diameter x 5/16" deep counterbore for nut and washer or 31/32" diameter clearance for entire assembly.

Type 5: For seals requiring automotive type valvecores. 5/16" diameter clearance hole with 5/8" diameter x 7/32" deep counterborefor nut and washer or 5/8" diameter clearance for entire assembly.

Type AC6	Type AC7	Type AC8	Type AC9

Type AC6: 3/4" diameter clearance hole with 150° countersink x 2" diameter. Type AC7: 5/8" diameter clearance hole with 150° countersink x 1-1/2" diameter. Type AC8: 3/8" diameter clearance hole with 150° countersink x 3/4" diameter. Type AC9: Various diameters and lengths available for press fit into bored hole.

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