ANCHOR SEAL
Product # P-17 1:1 Silicone Rubber
Features:
Applications:
· Platinum, addition cure
Electrical encapsulation
· Convenient 1:1 mix ratio
Sensitive electronic parts
· Chemical resistant
Heat resistant
· Dimensionally stable
· No shrinkage
Mixing & Curing Instructions:
Mix Ratio: 100 Base to 100 Activator by wt.
Cure Schedule: 16-24 hours @ 77oF. or
1.5 hrs. @ 125oF. or 45 min. @ 150oF. or
25 min. @ 200oF. or 15 min. @ 200oF.
Properties @ 77oF, Uncured:
Pot Life, hours…………………..………………………………..…. 1-2
Viscosity, CPS………...…… Base… 20,000 …….. Activator… 25,000
Viscosity, B:A mixed, CPS……………………...……………... 25,000
Shelf life, factory sealed cans, minimum, months…..………………
6
Physical Properties @77oF, Cured:
Color…………………………...…………………………………... gray
Durometer, (Hardness) Shore A...……………….……………...…… 50
Specific Gravity, cured, grams/cc………
………..……………
1.30
Tensile strength, ASTM D-412, PSI…..…..……………………….. 495
Tensile elongation, ASTM D-412, %……………………………… 150
Moisture absorption, 28 days @ 25oC, %………………………
0.14
Shrinkage………………………………………………………….… nil
Service temperature, oF…..…………………………………. -60 to 650
Tear strength, ASTM D624, Die B, ppi...…………………………
27
Electrical Properties @ 77oF, Cured:
Dielectric Strength, ASTM D149, volts/mil……………………….. 450
Dielectric Constant, ASTM D150, 1 KHz ……………………….… 3.1
Dissipation Factor, ASTM D150, 1 KHz…...…………………… 0.002
Volume resistivity, ASTM D257, ohm-cm ………………...… 1 x 1015
-more-
ANCHOR SEAL
Product # P-17 1:1 Silicone Rubber
IMPORTANT INFORMATION: READ BEFORE USING PRODUCT
Directions for Use: Because of differences in density, pigments and fillers, when present, may separate
from the liquid components during storage. To insure product homogeneity and maximum performance, check the
containers for settling. Loosen any settled pigments from the bottom of the container and thoroughly mix contents
prior to use. Use a mixing stick or power mix at slow speed with a drill press and dispersion blade.
Measuring: Carefully weigh Part B and Part A components with an accurate scale. If measuring volumetrically, use
precise metering pumps, graduated/pre-marked containers or pre-measured kits. Place the correct proportions of
Part B and Part A into a straight-sided container. Note: Altering the mix ratio from what is specified on the data
sheet is not recommended. Cured properties could be adversely affected.
Mixing: Mix thoroughly with a flat-ended stick or a slow speed drill press with a dispersion blade. Scrape the sides
and bottom occasionally to assure a thorough blend. Do not whip excessive air into the mixture. To guard against
partially cured sections, never apply material scraped from the sides of the original mixing container. For best
results, transfer the mixture into a second container and stir it again before application. This will help insure
consistent properties and maximum performance.
De-airing: Some applications require a totally air-free product. If a vacuum pump and chamber are used, evacuate
the material for 10-15 minutes @ 28-29 inches of mercury. Allow sufficient space above the liquid for expansion,
about four times the liquid volume. Curing under pressure, 60 psi, will compress most bubbles and promote a bubble
free casting.
Curing: Platinum based, addition cure silicone rubber is sensitive to inhibition caused by chemical contamination.
The product will not cure against an alkaline surface or a surface contaminated by a tin based RTV or tobacco
products.
Handling Cautions: Review the Material Safety Data Sheet before using this product.
Warning: For Industrial Use Only. All chemicals must be handled with care. Avoid breathing fumes and mists,
they could cause respiratory discomfort or damage. Work in a well-ventilated area. Avoid all contact with the skin.
If contact occurs, wash affected area thoroughly with soap and water. Repeated skin contact may cause dermatitis in
susceptible individuals. Wear protective clothing and gloves. Irritation may result if this product is splashed into the
eyes. Always wear eye protection. If eye contact occurs, flood eyes with clear water for 15 minutes and immediately
seek medical attention. Always maintain good industrial hygiene when using this product.
Notice To Buyer: All information contained herein is believed to be accurate. However, it is the
responsibility of the end user to determine the suitability of this product in his particular application. As the use of
this product by others is beyond our control, no warranty, whether expressed or implied, is made by Anchor Seal,
Inc. or any of its representatives as to this product’s merchantability or fitness for a particular purpose. Under no
circumstances shall Anchor Seal, Inc. be liable for incidental, consequential or other damages for any reason. The
sole liability of Anchor Seal, Inc. shall be to refund the purchase price or replace materials deemed to be defective
by us.
5/24/01
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