Adapters, Plugs And Washers From SKF Lubrication Fittings Catalog

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Adapters, Plugs and Washers (SKF Catalog Pages 70–81 Reference)

A comprehensive, heavy-duty line of lubrication system adapters bridges different thread standards, pitch geometries, and system pressure ratings. These critical hardware components ensure an absolute, leak-free connection across progressive metering blocks, pump ports, and rigid pipeline nodes. Fitsch manufactures fully interchangeable, high-compliance alternatives to standard OEM layouts, giving procurement teams access to reliable, cost-efficient fluid routing links.

The complete port connection and adapter family relies on five distinct architectural categories:

Technical schematic showing RI-series cylindrical thread reducers and tapered thread reducing connectors with DIN 7603 sealing washers

Thread Reducing Connectors

Engineered to safely transition between dissimilar thread sizes and system pressure zones, these thread reducing connectors are split across two core pressure-sealing mechanics:

  • Low-Pressure Applications: Cylindrical-thread reducers rated for operational metrics up to 45 bar. These styles rely strictly on a DIN 7603 sealing washers copper or aluminum ring seated flat against the port face.

  • High-Pressure Applications: Tapered-thread reducers rated for intense performance limits up to 350 bar, achieving a structural seal via thread interference. For compact or tight routing geometries, specialized 45° and 90° elbow reducing configurations are available to streamline direction changes.

RI-Series Cylindrical Thread Reducers

The heavy-duty RI-series comprises premium cylindrical thread reducers optimized for severe-duty automated networks. They safely handle maximum working pressures up to 400 bar. This specific series is ideal for adapting high-pressure pump outlets to standard mainline routing tubes without risking thread stripping or pressure-drop leakage.

Rotatable Banjo Adapters

When fluid routing layouts demand continuous flexibility or must negotiate tight 90-degree port clearances, implementing high-grade rotatable banjo adapters provides the ultimate solution. These assemblies consist of a cross-drilled banjo bolt and a smooth-swiveling ring body. They allow installers to orient the fluid discharge angle through a full 360-degree radius before final torque-down, preventing torsional strain on neighboring line networks.

Circuit Venting Plugs

Trapped air pockets within a grease line cause compressibility issues and system timing faults. Purpose-built circuit venting plugs are implemented at high system nodes to allow rapid circuit degassing during commissioning or maintenance cycles. These degassing parts are available in two primary styles:

  • Profile-Seal Variants: Utilizing a molded elastomer profile ring in strict compliance with ISO 9974-2.

  • Flat-Washer Variants: Sealed securely using standard compressible metal rings.

VSTI Screw Plugs and Sealing Components

To safely isolate unused manifold outlets, block ports, or indicator cavities, industrial lines utilize standard VSTI screw plugs. These durable hydraulic pipe plugs feature internal hex drives for flush, low-profile installations within compact machine housings. To fully support routine field maintenance and layout overhauls, Fitsch supplies comprehensive flat-washer assortment kits in bulk quantities. These kits feature high-purity copper and aluminum standard rings built to meet precise DIN 7603 dimensions.

By sourcing these critical sealing rings, port plugs, and structural extensions through the Fitsch industrial adapters factory, global purchasing groups can acquire premium components at highly competitive wholesale rates. Incorporating these premium-grade alternative automatic lubrication system components ensures absolute sealing integrity and protects heavy machinery lines from unexpected breakdown risks.

Part Number's Designation and Material

72 – Reducing connectors with cylindrical thread (up to 45 bar, sealed by flat washer DIN 7603)

Order number

Designation

Material

843-130-021

ADAPTER ST M 3Ax M 5I CF

Steel, galvanized surface

843-130-022

ADAPTER ST M 4Ax M 5I CF

Steel, galvanized surface

843-130-023

ADAPTER ST M 5Ax M 5I CF

Steel, galvanized surface

72 – Reducing connectors with tapered thread (up to 45 bar)

Order number

Designation

Material

406-044-S1

ADAPTER ST M10x14Kx R1/4I CF

Steel, galvanized surface

73 – Reducing connectors with cylindrical thread (up to 45 bar, sealed by flat washer DIN 7603)

Steel, galvanized surface

Order number

Designation

Material

401-013-161

ADAPTER ST G1/4Ax G1/2 CF

Steel, galvanized

401-011-132

ADAPTER ST G1/2Ax G1 CF

Steel, galvanized

401-013-171

ADAPTER ST G1/2Ax G1/2 CF

Steel, galvanized

401-013-175

ADAPTER ST M12x1,5Ax G1/4 CF

Steel, galvanized

401-016-371

ADAPTER ST M14x1,5Ax G1/4 CF

Steel, galvanized

243-001-10

ADAPTER ST M16x1,5Ax G1/2 CF

Steel, galvanized

267-001-36

ADAPTER ST M18x1,5Ax G3/8 CF

Steel, galvanized

243-001-20

ADAPTER ST M18x1,5Ax G1/2 CF

Steel, galvanized

44-375-2025-2029

ADAPTER ST M20x1,5Ax G3/4 CF

Steel, galvanized

Brass

Order number

Designation

Material

267-001-47

ADAPTER MS G3/8Ax G3/4

Brass

267-001-60

ADAPTER MS G3/8Ax G1/2

Brass

401-019-132

ADAPTER MS G1/2Ax G1/8

Brass

D2333

ADAPTER MS G1/2Ax G1/4

Brass

401-013-131

ADAPTER MS G1/2Ax G1/2

Brass

D234

ADAPTER MS G1/2Ax G3/8

Brass

D233

ADAPTER MS G3/8Ax G1/4

Brass

267-001-03

ADAPTER MS G3/8Ax G3/8

Brass

406-024

ADAPTER MS M10x1Ax G3/8

Brass

401-016-312

ADAPTER MS M10x1Ax G3/4

Brass

401-019-352

ADAPTER MS M14x1,5Ax G1/8

Brass

73 – Adapter for pressure gauges (up to 45 bar, sealed by flat washer DIN 7603)

Order number

Designation

Material

248-610.01

ADAPTER MS D 6AxG 1/4

Brass

74 – Adapter for pressure gauges with cylindrical thread (up to 45 bar)

Order number

Designation

Material

301-134

CONNECTING PIECE ST – M10x1 ZN

Steel, galvanized

301-034

CONNECTING PIECE ST – M14x1,5 ZN

Steel, galvanized

74 – Reducing connectors with tapered thread (up to 350 bar)

Order number

Designation

Material

304-19230-1

ADAPTER R1/8 AxM10x1,0 CF

Steel, galvanized

304-19787-1

ADAPTER M 8x1,0xM 6x1,0Kx1,0KA CF

Steel, galvanized

304-19437-1

ADAPTER M 8x1,0KxAxM 8x1,0I CF

Steel, galvanized

304-19548-1

ADAPTER M 8x1,25KxAxM 8x1,0I CF

Steel, galvanized

304-19167-1

ADAPTER M 8x1,0KxAxG1/8

Steel, galvanized

304-19309-1

ADAPTER M10x1,0KxM10x1,0 CF

Steel, galvanized

304-16337-1

ADAPTER M10x1Kx1KAxM10x1K CF

Steel, galvanized

75 – Elbow reducing connectors 45° with tapered thread (up to 350 bar)

Order number

Designation

Material

432-70673-1

ELBOW FITT.ST 45DEGREE R1/8AxG1/8 CF

Steel, galvanized

406-155K

ELBOW FITT.ST 45DEGREE R1/8AxM10x1,0I CF

Steel, galvanized

406-165K

ELBOW FITT.ST 45DEGREE R1/8AxG1/8 CF

Steel, galvanized

432-24050-1

ELBOW FITT.ST 45DEGREE M8x1KxAxM8x1,0I CF

Steel, galvanized

432-71483-1

ELBOW FITT.ST 45DEGREE M8x1KxAxM10x1,0I CF

Steel, galvanized

406-245K

ELBOW FITT.ST 45DEGREE M10x1KxAxM8x1,0I CF

Steel, galvanized

406-045K

ELBOW FITT.ST 45DEGREE M10x1KxAxM10x1I CF

Steel, galvanized

432-24051-1

ELBOW FITT.ST 45DEGREE M10x1KxAxM8x1I CF

Steel, galvanized

75 – Elbow reducing connectors 90° with tapered thread (up to 350 bar)

Order number

Designation

Material

432-70674-1

ELBOW FITT.ST.90DEGREE G1/8xR1/8A CF

Steel, galvanized

406-091K

ELBOW FITT.ST.90DEGREE R1/8AxG1/8 CF

Steel, galvanized

406-093K

ELBOW FITT.ST.90DEGREE R1/8AxM10x1,0I CF

Steel, galvanized

406-092K

ELBOW FITT.ST.90DEGREE M8x1,25KxAxM8x1,25I CF

Steel, galvanized

406-094K

ELBOW FITT.ST.90DEGREE M8x1KxAxM10x1I CF

Steel, galvanized

406-096K

ELBOW FITT.ST.90DEGREE M10x1KxAxM8x1I CF

Steel, galvanized

406-095K

ELBOW FITT.ST.90DEGREE M10x1KxAxM10x1I CF

Steel, galvanized

432-24043-1

ELBOW FITT.ST.90DEGREE M8x1KxAxM8x1I CF

Steel, galvanized

432-24052-1

ELBOW FITT.ST.90DEGREE M10x1KxAxM8x1I CF

Steel, galvanized

76 – Reducing connectors RI with cylindrical thread (up to 400 bar)

Steel galvanized

Order number

Designation

Material

222-12578-5

BUSHING ST R1G 1/8AxG1/4 CF

Steel galvanized

222-12578-1

BUSHING ST R1G 1/4AxG1/8 CF

Steel galvanized

222-12581-5

BUSHING ST R1G 1/4AxG3/8 CF

Steel galvanized

222-12521-6

BUSHING ST R1G 1/4AxG1/2 CF

Steel galvanized

222-12521-4

BUSHING ST R1G 3/8AxG1/4 CF

Steel galvanized

222-13672-3

BUSHING ST R1G 3/8AxG1/2 CF

Steel galvanized

222-12578-7

BUSHING ST R1G 3/8AxG1/2 CF

Steel galvanized

222-12578-3

BUSHING ST R1G 3/8AxG3/4 CF

Steel galvanized

222-12521-2

BUSHING ST R1G 1/2AxG1/4 CF

Steel galvanized

96-3102-0058

BUSHING ST R1G 1/2AxG3/8 CF

Steel galvanized

222-12599-3

BUSHING ST R1G 1/2AxG3/4 CF

Steel galvanized

222-12599-2

BUSHING ST R1G 1/2AxG1 CF

Steel galvanized

222-2047-2

BUSHING ST R1G 1/2AxG3/8 CF

Steel galvanized

222-2047-5

BUSHING ST R1G 3/4AxG1/2 CF

Steel galvanized

222-12578-7

BUSHING ST R1G 3/4AxG1/4 CF

Steel galvanized

222-12578-8

BUSHING ST R1G 3/4AxG3/8 CF

Steel galvanized

222-12578-4

BUSHING ST R1G 3/4AxG1 CF

Steel galvanized

96-3129-0058

BUSHING ST R1G 3/4AxG1 1/4 CF

Steel galvanized

222-12579-4

BUSHING ST R1G 1AxG1/2 CF

Steel galvanized

222-12579-9

BUSHING ST R1G 1AxG3/8 CF

Steel galvanized

96-3126-0058

BUSHING ST R1G 1AxG1/4 CF

Steel galvanized

222-12579-5

BUSHING ST R1G 1AxG3/4 CF

Steel galvanized

222-12579-2

BUSHING ST R1G 1 1/4AxG3/8 CF

Steel galvanized

96-3133-0058

BUSHING ST R1G 1 1/4AxG1/2 CF

Steel galvanized

222-13678-8

BUSHING ST R1G 1 1/2AxG1/2 CF

Steel galvanized

222-12521-1

BUSHING ST R1G 1 1/4AxG3/4 CF

Steel galvanized

222-12599-6

BUSHING ST R1G 1 1/2AxG1 CF

Steel galvanized

96-3112-0058

BUSHING ST R1G 1 1/4AxG3/4 CF

Steel galvanized

222-13678-3

BUSHING ST R1G 1 1/2AxG1 CF

Steel galvanized

96-3136-0058

BUSHING ST R1G 2xG1 1/2AxG1 1/4 CF

Steel galvanized

96-3137-0058

BUSHING ST R1G 2AxG1 1/2 CF

Steel galvanized

Stainless steel

Order number

Designation

Material

222-13618-1

BUSHING VA R1G 1/8AxG1/4

Stainless steel 1.4571

222-10365-3

BUSHING VA R1G 1/4AxG1/8

Stainless steel 1.4571

222-12578-5

BUSHING VA R1G 1/4AxG1/2

Stainless steel 1.4571

222-12578-6

BUSHING VA R1G 3/8AxG1/2

Stainless steel 1.4571

222-12418-7

BUSHING VA R1G 3/8AxG1/4

Stainless steel 1.4571

222-12418-0

BUSHING VA R1G 1/2AxG3/4

Stainless steel 1.4571

222-12418-6

BUSHING VA R1G 1/2AxG3/8

Stainless steel 1.4571

222-12418-9

BUSHING VA R1G 3/4AxG3/8

Stainless steel 1.4571

222-13618-3

BUSHING VA R1G 3/4AxG1/2

Stainless steel 1.4571

222-12418-5

BUSHING VA R1G 5/8AxG3/4

Stainless steel 1.4571

77 – Banjo fittings, rotatable (group 1)

Order number

Designation

Material

091308

Straight swivel 1/8 NPT

Steel galvanized

223-12567-1

Swivel 90° 1/8 NPT

Steel galvanized

626-25702-1

Swivel R1/4xR1/4 MS

Brass

77 – Banjo fittings, rotatable (group 2)

Order number

Designation

Material

626-25716-2

Swivel 90° G1/4AxG1/4AF

Steel galvanized

626-25540-2

Swivel 90° G1/4AxG1/8AF

Steel galvanized

626-26700-2

Swivel 90° G1/8AxD 4 F

Steel galvanized

626-25438-2

Swivel 90° G1/4AxD 4 F

Steel galvanized

626-26701-2

Swivel 90° G1/4AxD 4 F

Steel galvanized

626-25717-2

Swivel 90° G1/4AxD 6 F

Steel galvanized

626-26696-2

Swivel straight G1/8AxG1/4 CF

Steel galvanized

78 – Banjo fittings, rotatable (rotating joints)

Brass

Order number

Designation

Material

DLY930-2

ROTATING JOINT MS 8 G1/4A

Brass

DLY931

ROTATING JOINT MS 8 R1/8K

Brass

Aluminum

Order number

Designation

Material

DLY932

ROTATING JOINT AL 8 R1/4K

Aluminum

79 – Vent plugs with profile seal acc. to ISO 9974-2

Order number

Designation

Material

466-431-006

VENTILATING SCREW.HEX ST M10x1

Steel, galvanized

466-431-005

VENTILATING SCREW.6-SOCK ST M10x1

Steel, galvanized

466-431-009

VENTILATING SCREW.6-SOCK ST G 1/8A

Steel, galvanized

79 – Vent plugs sealed by flat washer acc. to DIN 7603

Order number

Designation

Material

833-020-022

VENTILATING SCREW ST M 8x1

Steel, galvanized

833-330-016

VENTILATING SCREW ST M10x1

Steel, galvanized

833-330-021

VENTILATING SCREW ST G 1/8A

Steel, galvanized

833-340-034

VENTILATING SCREW ST G 1/4A

Steel, galvanized

80 – Screw plugs VSTI

Steel galvanized

Order number

Designation

Material

466-419-001

PLUG.CLOS.6-SOCK.VSTI G 1/8A-ED CF

Steel, galvanized

223-13702-1

PLUG.6-SOCK ST VSTI G1/4A-ED CF

Steel, galvanized

223-13701-7

PLUG.6-SOCK ST VSTI G 1/2A-ED CF

Steel, galvanized

223-13702-6

PLUG.6-SOCK ST VSTI G3/4A-ED CF

Steel, galvanized

203-10530-4

PLUG 6-SOCK ST VSTI G1A-ED CF

Steel, galvanized

466-429-001

PLUG.CLOS.6-SOCK VSTI M 8x1-ED CF

Steel, galvanized

466-431-001

PLUG.CLOS.6-SOCK VSTI M10x1-ED CF

Steel, galvanized

466-439-001

PLUG.CLOS.6-SOCK VSTI M18x1,5-ED CF

Steel, galvanized

Stainless steel

Order number

Designation

Material

223-13700-5

PLUG 6-SOCK.VA VSTI G1/4A-ED

Stainless steel 1.4571

223-13702-9

PLUG 6-SOCK.VA VSTI G1/2A-ED

Stainless steel 1.4571

80 – Screw plugs sealed by flat washer acc. to DIN 7603

Order number

Designation

Material

DIN910-R1-8-5.8

PLUG.CLOSURE-HEX. 5.8 G 1/8AZN

Steel, galvanized

DIN910-R1-4x8-5.8

PLUG.CLOSURE-HEX. 5.8 G 1/4AZN

Steel, galvanized

DIN910-R3-8-5.8

PLUG.CLOSURE-HEX. 5.8 G 3/8AZN

Steel, galvanized

DIN910-R1-2-5.8

PLUG.CLOSURE-HEX. 5.8 G 1/2AZN

Steel, galvanized

DIN910-R3-4-5.8

PLUG.CLOSURE-HEX. 5.8 G 3/4AZN

Steel, galvanized

DIN910-R1-5.8

PLUG.CLOSURE-HEX. 5.8 G1AZN

Steel, galvanized

402-021

PLUG.CLOSURE-HEX. ST M 6x1SwA10

Steel, galvanized

404-011

PLUG.CLOSURE-HEX. ST M 8x1Sw11

Steel, galvanized

406-011

PLUG.CLOSURE-HEX. ST M 10x1Sw12

Steel, galvanized

408-211

PLUG.CLOSURE-HEX. ST M12x1,0A SW17

Steel, galvanized

408-011

PLUG.CLOSURE-HEX. ST M12x1,5A SW17

Steel, galvanized

410-011

PLUG.CLOSURE-HEX. ST M 14x1,5A SW19

Steel, galvanized

412-011

PLUG.CLOSURE-HEX. ST M16x1,5A SW22

Steel, galvanized

DIN908-M10x1-5.8

PLUG.CLOSURE-SOCK 5.8 M10x1,2ZN

Steel, galvanized

DIN908-M12x1-5.8

PLUG.CLOSURE-SOCK 5.8 M12x1,5ZN

Steel, galvanized

DIN908-M14x1,5-5.8

PLUG.CLOSURE-SOCK 5.8 M14x1,5ZN

Steel, galvanized

DIN908-G1/8-5.8

PLUG.CLOS6-SOCK 5.8 G 1/8AZN

Steel, galvanized

DIN908-G3-8-5.8

PLUG.CLOS6-SOCK 5.8 G 3/8AZN

Steel, galvanized

81 – Flat washers

Aluminum

Order number

Designation

Material

504-019-AL

SEALING RING AL 10,2x13,9x1,1

Aluminum

Copper

Order number

Designation

Material

DIN7603-A6x10-CU

SEALING RING CU 6,2x9,9x1,0

Copper

DIN7603-A8x11,5-CU

SEALING RING CU 8,2x11,4x1,0

Copper

504-019

SEALING RING CU 10,2x13,9x1,1

Copper

508-215-CU

SEALING RING CU 12,2x15,9x1,4

Copper

508-205-CU

SEALING RING CU 12,2x15,9x2,0

Copper

DIN7603-A12x18-CU

SEALING RING CU 12,2x16,2x1,0

Copper

508-108

SEALING RING CU 13,2x17,9x1,5

Copper

DIN7603-A14x18-CU

SEALING RING CU 14,2x17,9x1,5

Copper

DIN7603-A16x20-CU

SEALING RING CU 16,2x19,9x1,5

Copper

DIN7603-A17x21-CU

SEALING RING CU 17,2x20,9x1,5

Copper

DIN7603-A18x22-CU

SEALING RING CU 18,2x21,9x1,5

Copper

DIN7603-A20x24-CU

SEALING RING CU 20,2x23,9x1,5

Copper

DIN7603-A22x26-CU

SEALING RING CU 22,2x25,9x1,5

Copper

DIN7603-A27x32-CU

SEALING RING CU 27,3x31,9x1,5

Copper

DIN7603-A30x36-CU

SEALING RING CU 30,3x35,9x2,0

Copper

DIN7603-A33x39-CU

SEALING RING CU 33,3x38,9x2,0

Copper

 

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