Key Features:- Meets NASA ASTM E595
- Neutral type cure
- Flowable consistency
- Good bond strength to many substrates
Product Description: MasterSil 921-LO is a very special, high performance RTV silicone for bonding, sealing, coating and potting. It is a neutral curing, non-corrosive type system that passes NASA low outgassing test requirements. It is an excellent electrical insulator that spreads evenly and smoothly. The system is well suited for smaller potting and encapsulation situations. It bonds well to a wide variety of substrates, including metals, composites, ceramics, glass as well as many rubbers and plastics. Not surprisingly, it can withstand rigorous thermal cycling and shock. The lower durometer of MasterSil 921-LO facilitates its usage in conjunction with sensitive components, particularly electronic and optical ones. Similar to other single part silicones, the curing mechanism is based on humidity; the higher it is, the faster the cure. Also thinner sections cure more quickly than thicker ones. When cured in thicker sections, it is translucent. However in thinner sections, such as when bonding glass to itself, it has marvelous transparency and light transmission. Significantly, it has a wide service temperature range of -175°F to +500°F, surpassing many conventional RTVs. This versatile system can be used in aerospace, electronic, optical, specialty OEM and other types of applications, where a low outgassing, flowable silicone is required. It should be noted, in order to achieve the low outgassing properties, a seven day cure at room temperature is recommended.Information provided by Master Bond Inc. |
| Master Bond is a leading manufacturer of adhesives, sealants, coatings and potting compounds. Master Bond’s vast product line consists of over 3,000 epoxy, polyurethane, silicone, cyanoacrylate and latex adhesives that vary in viscosity, cure speed, strength, chemical resistance, electrical properties, etc. Our custom adhesives offer design flexibility and provide excellent bonding performance. Visit www.masterbond.com.Click here to view all available suppliers for this material. Please click here if you are a supplier and would like information on how to add your listing to this material. |
