MP 55310
Harmonization Code : 3214.10.00 | Putty and other mastics | Resin cements, caulking compounds and other mastics

Main features
- 7-9 Minute Open Time
- 19-23 Minute Fixture Time
- 3,300 psi Steel Shear
Product Description
H.B. Fuller MP-55310 Methacrylate Structural Adhesive provides a two-part methyl methacrylate system for structural bonding of metals, thermosets, thermoplastics, and composite assemblies. The resin and activator mix 1:1 by volume or weight and provide a 7-9 minute open time with fixture in 19-23 minutes at 25 deg C. The adhesive fills gaps up to 0.125 in and reaches full cure in 24 hours. Typical cured data include Shore D 75 hardness, 4,350-5,800 psi tensile strength, and overlap shear of 3,300 psi on carbon steel and 3,100 psi on aluminum under ASTM D1002 conditions.
Key features
- Seven-to-nine-minute open time: Provides a defined working window for adhesive placement and assembly.
- Nineteen-to-twenty-three-minute fixture: Develops fixture strength in 19-23 minutes at 25 deg C.
- One-eighth-inch gap fill: Fills bond gaps up to 0.125 in in bonded assemblies.
Applications / Suitable for
- Bonding aluminum, steel, stainless steel, and e-coated metals
- Bonding fiberglass, phenolic, gel coat, epoxy, and polyurethane materials
- Bonding ABS, polycarbonate, nylon/PA, PVC, PEEK, and PBT or PET blends
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Additional Information
Uncured and working properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Mix ratio | 1:1 | by volume or weight | Resin to activator |
| Resin viscosity | 60,000-80,000 | cP | Brookfield RV7; 20 rpm; 25 deg C |
| Activator viscosity | 60,000-110,000 | cP | Brookfield RV7; 20 rpm; 25 deg C |
| Mixed density | 0.98 | g/cc | Typical |
| Open time | 7-9 | min | 25 deg C |
| Fixture time | 19-23 | min | 25 deg C |
| Full cure | 24 | h | Room temperature |
| Maximum gap fill | 0.125 | in | Bondline |
Cured properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Shore hardness | 75 | Shore D | ASTM D2240 |
| Tensile strength | 4,350-5,800 | psi | ASTM D638 |
| Overlap shear on carbon steel | 3,300 | psi | ASTM D1002; 25 deg C; 50% RH |
| Overlap shear on aluminum | 3,100 | psi | ASTM D1002; 25 deg C; 50% RH |
| Thermal service range | -67 to 250 | deg F | Cured adhesive |





















