Cowles Operating · Electronic Components
99891
Insulation Sleeving, Electrical
Part Number99891
ManufacturerCowles Operating
AvailabilityAvailable to order — request a quote
Specifications
NSN5970-01-698-1643 (NSN)
Federal Item NameINSULATION SLEEVING,ELECTRICAL
Federal Supply Class5970 — Electrical Insulators
Style DesignatorSHRINKABLE
Overall Length4.0 FEET NOMINAL
ColorBLACK
Recovered Inside Diameter0.16 INCHES NOMINAL
Expanded Inside Diameter0.50 INCHES NOMINAL
Recovered Wall Thickness0.07 INCHES NOMINAL
Design FormFULL ROUND
MaterialPLASTIC
ESD/EMICode A — ESD/EMI sensitive item
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is 99891 available?
We can source 99891 even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is 99891 by Cowles Operating obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 99891 has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like 99891?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for 99891?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.