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Cho-Therm 1641 A/B Silicone Compound (Includes 1086 Primer)
CHO-THERM 1641 compound is a one-component, thermally conductive, electrically insulating (non-acetic acid generating), silicone-based RTV adhesive/sealant/potting compound. The material offers high thermal conductivity, flexibility, excellent high and low-temperature resistance, as well as electrical insulation.
Data Sheets
Download the Cho-Therm 1641 A/B technical data sheet (TDS) and the Cho-Therm 1641 A/B safety data sheet (SDS) from Silmid today. Once you have logged in or signed up, the datasheet will be visible for download if one is available. Please login to access datasheetsProduct Properties
Product Information
Components of circuits encapsulated in cured CHO-THERM 1641 compound are accessible by cutting away the compound. After repair, the components can be re-encapsulated with no loss in performance. CHO-THERM 1641 compound will stick, but not permanently bond to most non-silicone surfaces. A permanent bond can be made, if desired, by using Chomerics' CHO-BOND 1086 primer. Components potted in CHO-THERM 1641 compound have excellent thermal and mechanical shock resistance, thermal diffusivity and moisture resistance.
CHO-THERM 1641 compound may also be used as a cure-in-place thermal grease. The excess material will cure and thereby be resistant to vapour degreasing, and it is possible to attain very low thermal impedance. The cured CHO-THERM 1641 compound will not separate or migrate on the heat sink or circuit board.
The CHOTHERM 1641 compound will stick to non-silicone materials. If easy removal is needed, the package and heat sink should be brush painted with a mould release before application. Adhesion to non-silicone surfaces may be improved by using Chomerics CHOBOND 1086 primer.
Shipping information
UK Delivery Options
Standard UK Delivery
£12:00 (excl. VAT) Free Delivery on online orders over £100.
Orders usually delivered 24-48 subject to stock availability.
Proforma orders require cleared funds before shipment. Please allow 1 working day for fund allocation.
UK Priority Next Day Services
UK Next Day Delivery: £19.00 (excl. VAT)
Express Pre 10am Delivery: £30.00 (excl. VAT)
Orders placed before 3:00 pm qualify for next day delivery.
Service available to eligible postcodes. If unavailable, your postcode is not covered. FedEx does not guarantee timed deliveries.
Priority Same Day Service
£250 (excl. VAT)
Orders placed online between 8:00am - 11:00am by UK business customers are eligible for Priority Same Day Service. We cannot guarantee Same Day Delivery for orders placed after 11:00am.
Additional Costs: £150 (excl. VAT) for Dangerous Goods Declaration if required.
Click and Collect
£0.00 (excl. VAT)
Your order will not be immediately available, you will receive an email confirming when your order is ready for collection. You must bring your order confirmation with the Sales Order Number.
Trade Counter is open weekdays from 8:30 am to 4:30 pm, located at the front of our distribution centre.
Same-Day Collection available for orders placed before 3:00 pm.
Orders not collected within 7 working days will incur a 25% restocking fee. For international orders, this period is extended to 14 working days.
Additional Delivery Options
Additional delivery options are available subject to product selection at checkout.
Export Delivery Options
Export delivery options are available subject to items in basket and delivery destinations, prices are calculated at checkout.
Door to Door
The freight zone is based upon the Fedex International Priority zones, used to calculate the shipping rate according to the destination country. Goods will be delivered at place as defined by INCOTERMS 2020.
FCA
Additional packing costs may apply if goods are to be shipped by Air Freight. They will be handed to the chosen carrier with the required paperwork according to the free carrier terms as set out in INCOTERMS 2020. Please note that you agree to pay the applicable carrier charges by agreeing to this delivery option.
Please refer to our delivery page for more information.