Certification to Military Specification
The list below contains the Momentive products that currently certified as meeting the requirements outlined in the United States Department of Defense military specifications (Mil-Spec) listed.
- Primers SS4004P, SS4044P, SS4179
- Group I, Type I RTV102, RTV103, RTV108, RTV109
- Group I, Type II RTV106
- Group II, Type I RTV112, RTV118
- Group II, Type III RTV116
- Primers SS4004P, SS4044P, SS4179
- Group I, Type I RTV162
- Group I, Type II RTV167
- Primers SS4004P
- Group I, Type I or 1B1 RTV8111
- Group I, Type IIA RTV8112
- Group II, Type IIA RTV8262
Please note that in Europe, small packages may have a “Q” designation following the grade name (Example RTV102Q). These are the same materials as the parent grade that are repackaged in packaging that complies with local labeling requirements. The “Q” grades are also certified to meet the requirements consistent with the list above.
Food Contact Applications For Silicone Rubber Compounds
Several Momentive Performance Materials RTV silicone rubber compounds can be evaluated for food contact applications where FDA, USDA and NSF regulations apply.
One-Part RTV Sealants
The following RTV silicone rubber adhesive sealants may be used in repeated contact with foods under FDA regulation 21CFR177.2600 “Rubber Articles Intended for Repeated Use” (and, by reference, 21CFR175.300 “Resins and Polymeric Coatings”).
RTV102 | RTV103 | RTV106 | RTV108 | RTV109 | RTV112 | RTV116 | RTV118 | IS802 | IS803 | IS806 | IS808
Use of these sealants is subject to the following conditions:
- The sealant must be applied in accordance with Good Manufacturing Practices at a thickness not to exceed 6mm (1/4″) from an exposed edge, as a continuous film between joints acting as a functional barrier between the food and the substrate (the area underneath the joint.)
- The sealant must be cured for a minimum of 14 days at 25C (77F) and 50% RH.
- The sealant must be thoroughly cleansed before the first use.
- The sealant, when properly cured, must comply with the extractives limitations at temperatures up to and including reflux applications. The user should verify compliance with extractives limitations at higher temperatures.
- Compliance with 21CFR177.2600 does not authorize use of these sealants for the manufacture of baby bottle nipples.
All previously mentioned sealants must be evaluated to determine bond strength for each specific application. If greater adhesion is required, the evaluation of primer SS4044 (clear) is recommended. SS4044 may be used in repeated contact with food under 21CFR175.105 “Adhesives”, and used in conjunction with the RTV products covered under 21CFR177.2600.
Two-Part RTV Sealants
The following two-component RTV silicone rubber compounds may be used in repeated contact with foods under FDA regulation 21CFR177.2600, “Rubber Articles Intended for Repeated Use”
RTV11 | RTV41 | RTV615 | RTV664 | RTF762 | LIM2500 | LIM2600 | LIM2700 | SLE5500 | SLE5600
Use of these compounds is subject to the following conditions:
- The compound must be applied in accordance with Good Manufacturing Practices.
- The compound must be thoroughly cleansed before the first use.
- Compliance with 21CFR177.2600 does not authorize use of the compound for the manufacture of baby bottle nipples.
RTV11 and RTV41 must be formulated with a catalyst which complies with 21CFR175.300 or 177.2600. These catalysts are Dibutyl Tin Dilaurate (DBT) and RTV9950. RTV11, RTV41 and SLE5500 compounds should not be used in contact with acid foods.
As with the sealants, primers may be desired. If so, the evaluation of primers SS4044 or SS4120 is recommended. These are covered under FDA regulation 21CFR175.105 “Adhesives”, and can be used in conjunction with the silicone compounds mentioned above covered under 21CFR177.2600.
Momentive Performance Materials has on file approval letters from the USDA which states that RTV102, RTV103, RTV106, RTV108, RTV109, RTV112, RTV116, RTV118, IS802, IS803, IS806, IS800.09, and IS808 sealants, are chemically acceptable for use as sealants on equipment which may contact edible products in official establishments operating under the federal meat and poultry products inspection program. The areas sealed should be thoroughly rinsed with potable water after the sealant has properly cured. The compound must be used in a manner which prevents direct or indirect contamination of edible products.
If greater adhesion is required, the evaluation of primer SS4044 (clear) is recommended. SS4044 is listed with the USDA.
The final granting of authorization for the proposed use of such sealants is the responsibility of the inspector in charge of the official plant. Technical assistance will be provided by the Product Safety Branch of USDA upon request. These sealants are found in the “List of Proprietary Substances and Nonfood Compounds” issued by USDA. A copy of the approval letter may be required by the USDA inspector. A copy of the approval letter may be obtained from the Momentive Performance Materials Product Regulatory Compliance Operation.
Underwriters Laboratories Inc. (U.L)
UL are a global company helping industries to design and produce safer products. Testing to UL Standards ensure materials are developed which have known thermal endurance for electrical and mechanical performance and, in selected cases, flame retardency (UL94).
The materials featured on our website are classified by UL as plastics. Checks can be made on a materials status via the UL ‘Online Certifications Directory’ via a number of options. In the case of Momentive, for example, the following ‘UL File Numbers’ apply;
E36952 – US produced material
E56745 – Japan produced material
E205753 – German produced material