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APEM Inc. U21

SEALING WASHER 12.20MM ID

Answer first: this page is a purchasing reference for the exact part number U21 from APEM Inc.. Use it to start datasheet, package, manufacturer and RFQ verification; do not treat page text as a live stock, price or lead-time promise.

Manufacturer: APEM Inc. Category: Accessories - Boots, Seals Part number: U21 Package: RFQ verification required

Key Parameters

Part NumberU21
ManufacturerAPEM Inc.
CategoryAccessories - Boots, Seals
series-
packagingBag
product statusActive
param 1Sealing Washer
param 2Sealing Boots
param 3-
param 4Back or Front of Panel
param 5-
param 60.480" (12.20mm) ID x 0.039" (1.00mm) Height
param 7-
param 8-
param 9Nylon
param 10-
param 11-

Parameters are provided for purchasing review. Confirm package, suffix, lifecycle status, datasheet revision and approved substitutes before ordering.

How to Verify U21 Before Ordering

Datasheet and parameter checks

  • Confirm the full manufacturer part number, not only a shortened search keyword.
  • Compare package, pinout, dimensions, voltage or rating fields, temperature range and compliance wording against the released BOM.
  • Use the manufacturer datasheet or drawing for electrical and mechanical limits before approving a substitute.

RFQ fields SENICO needs

  • Send exact part number, manufacturer, quantity, target delivery date, destination and required packaging.
  • State whether alternates are allowed, and list any date-code, certificate, traceability or customer AVL requirement.
  • Keep exact stock, factory lead time and proposed alternatives in separate quote lanes.

For U21, SENICO recommends checking manufacturer marking, package, date code, requested quantity, approved vendor requirements and replacement risk before issuing a purchase order. If a supplier suggests an equivalent, record the changed fields and approval owner before comparing price.

We do not treat displayed data as a real-time stock or price commitment. The RFQ reply is the verified commercial reference.

Related buying guides: stock and lead-time verification, equivalent IC comparison, and BOM RFQ preparation.