| Attribute | Gel | RTV | LSR | HCR |
| No reinforcement | Silica/Resin reinforced | |||
| Mixed viscosity (cps) | 1000 – 50000 liquid | 5000 – 300000 liquid/paste | 100000 – 150000 thick paste | >20million gum |
| Supplied as | 2 component | 2 component or 1 component (chemistry dependent) | 2 component | 2 component or 1 component (chemistry dependent) |
| Cure Chemistry | Addition or Condensation | Addition or Condensation | Addition | Peroxide or Addition |
| Optimal Cure Temperature | Room temp or 50˚C – 120˚C | Room temp or 50˚C – 120˚C | 120˚C – 200˚C | 100˚C – 200 ˚C |
| Durometer Range | Penetration: 3 – 25 mm | 5 – 50 Shore A | 1 – 70 Shore A | 20 – 90 Shore A |
| Processing technologies | Coatings, Pouring, Encapsulated | Pouring/casting, brushing/coating | Injection molding, calendaring/coating | Extrusion/calendaring injection molding |