Model: MS28783-21

Packing Retainer

Properties:

Cross Sectional Shape

Square

Cross-sectional Thickness

Between 0.025 inches and 0.029 inches

Cross-sectional Height

Between 0.075 inches and 0.087 inches

Distance Between Ends

Between 0.093 inches and 0.250 inches

Center Hole Diameter

4.125 inches

Peripheral Diameter

Between 4.363 inches and 4.367 inches

Joint Type

Scarf-butt retainer

Angle

Between 25.0 degrees and 35.0 degrees

Material

Plastic tetrafluoroethylene

Material Specification

Mil-r-8791 military specification single material response

NSN

5330-00-634-8647

Part Number

MS28783-21

Description

Retainer,packing

CAGE

96906

An item designed to fit over a packing gland by mating with a surface of a second part which together will retain into a narrow groove or confined space the packing, preformed or o-ring, or an item designed to fit over a rod or shaft, to mate with a stuffing box to confine packing material. It may function as a static or dynamic seal retainer with the packing located on, around, or in the centerline direction of the rod or shaft axis. It may have holes or joints for mounting, be threaded or unthreaded. See also packing nut and packing nut, stuffing tube.

Part MS28783-21 NSN 5330-00-634-8647

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

13706

FIIG:

A032A0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

0.1000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

000000

UFC:

00000

LTL:

NO RATING

LCL:

WCC:

772

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 3926904500
SITC: 89399
End Use: Other industrial supplies
NAICS: 339991
USDA: 1

Freight Class: Gaskets,washers & other seals