any prefered numbers
@Phase1sr ?
Loctite numbers are.
638 is high strength fast curing.
LOCTITE 638 is designed for the bonding of cylindrical fitting parts, particularly where bond gaps can approach 0.25 mm. The product cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage due to shock and vibration. It not only works on active metals but also on passive substrates, exhibiting robust cure performance. The product offers high-temperature performance and good oil tolerance, and tolerates minor surface contaminants.
648 is high strength high temp which at a guess is what you want?
LOCTITE 648 is designed for the bonding of cylindrical fitting parts. The product cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage due to shock and vibration. It exhibits a robust curing performance. The product also works on passive substrates and offers high-temperature performance and good oil tolerance.
High temperature resistance
Proven to be tolerant of minor contamination due to industrial oils
High strength on all metals, including passive substrates (e.g. stainless steel)
Ideal for retention of parts with a clearance or interference fit
P1 NSF Reg. No.: 148350
DVGW Approval (EN 751-1): NG 5146C00236
WRAS Approval (BS 6920): 0808532
Colour: Green
Max. gap size: 0,15 mm
Service temperature range: -55 to +180°C
Tensile shear strength in N / mm²: > 25
Approvals: P1 NSF Reg. No.: 148350, DVGW Approval (EN 751-1): NG 5146C00236, WRAS Approval (BS 6920): 0808532
Fixture time steel: 3 min.
Thixotropy: No
