Grease Fitting Dust Caps
Keep grease fittings free of dirt and moisture.
Cap sets are useful for color-coding fittings based on what grease they take.
For technical drawings and 3-D models, click on a part number.


Pkg. | ||||||||
---|---|---|---|---|---|---|---|---|
Color | Material | Cap ID | Max. Temp., °F | Pkg. Qty. | Eye Dia. | 1-9 | 10-Up | |
1" Overall Lg. | ||||||||
Black | Polyethylene Plastic | 15/64" | 150° | 50 | 15/64" | 0000000 | 00000 | 00000 |
Blue | Polyethylene Plastic | 15/64" | 150° | 50 | 15/64" | 0000000 | 0000 | 0000 |
Green | Polyethylene Plastic | 15/64" | 150° | 50 | 15/64" | 0000000 | 0000 | 0000 |
Red | Polyethylene Plastic | 15/64" | 150° | 50 | 15/64" | 0000000 | 0000 | 0000 |
White | Polyethylene Plastic | 15/64" | 150° | 50 | 15/64" | 0000000 | 0000 | 0000 |
Yellow | Polyethylene Plastic | 15/64" | 150° | 50 | 15/64" | 0000000 | 0000 | 0000 |
2" Overall Lg. | ||||||||
Black | Polyethylene Plastic | 15/64" | 150° | 50 | 25/64" | 0000000 | 00000 | 0000 |
Blue | Polyethylene Plastic | 15/64" | 150° | 50 | 25/64" | 0000000 | 00000 | 0000 |
Green | Polyethylene Plastic | 15/64" | 150° | 50 | 25/64" | 0000000 | 00000 | 0000 |
Red | Polyethylene Plastic | 15/64" | 150° | 50 | 25/64" | 0000000 | 00000 | 0000 |
White | Polyethylene Plastic | 15/64" | 150° | 50 | 25/64" | 0000000 | 00000 | 0000 |
Yellow | Polyethylene Plastic | 15/64" | 150° | 50 | 25/64" | 0000000 | 00000 | 0000 |

45/64" Overall Lg. | |||||
---|---|---|---|---|---|
Color | Material | Cap ID | Temp. Range, °F | Each | |
Red | Buna-N Rubber | 29/64" | -40 ° to 150° | 0000000 | 00000 |

1" Overall Lg. | ||||||||
---|---|---|---|---|---|---|---|---|
Number of Pieces | Material | Includes | Container Type | Cap ID | Max. Temp., °F | Eye Dia. | Each | |
150 | Polyethylene Plastic | 25 Each Black Dust Caps 25 Each Blue Dust Caps 25 Each Green Dust Caps 25 Each Red Dust Caps 25 Each White Dust Caps 25 Each Yellow Dust Caps | Plastic Case | 15/64" | 150° | 15/64" | 0000000 | 000000 |
Grease Fitting Adapters
When the size or thread type of a fitting doesn't match an existing opening, use these adapters to make the connection.
Intermittent swivel adapters rotate to make it easier to access your fitting in tight spaces.
Zinc-plated steel adapters have mild corrosion resistance. Brass adapters resist corrosion better than zinc-plated steel adapters. 303 stainless steel adapters are more corrosion resistant than brass adapters and have good chemical resistance.
PTF-SAE and NPTF (Dryseal) threads are compatible with NPT threads. UNF threads are similar to threads on a machine screw or bolt. They require a sealant, such as an O-ring, to minimize leakage. SAE-LT threads are tapered but designed to be installed into a 1/4"-28 straight-thread UNF hole.
For technical drawings and 3-D models, click on a part number.


Connection | ||||
---|---|---|---|---|
Male | Female | Material | Each | |
Adapters | ||||
UNF 1/4"-28 | NPT 1/8 | Steel | 0000000 | 00000 |
SAE-LT 1/4"-28 | NPTF 1/8 | Zinc-Plated Steel | 0000000 | 0000 |
SAE-LT 1/4"-28 | NPTF 1/8 | 303 Stainless Steel | 0000000 | 00000 |
NPT 1/8 | NPT 1/4 | Brass | 000000000 | 0000 |
NPT 1/8 | NPT 1/4 | Steel | 00000000 | 00000 |
NPT 1/4 | NPT 3/8 | Steel | 00000000 | 00000 |
NPT 1/4 | BSPT 1/8 | Brass | 00000000 | 00000 |
BSPP 1/8 | NPT 1/8 | Steel | 00000000 | 0000 |
BSPP 1/4 | NPT 1/8 | Steel | 00000000 | 0000 |
BSPP 1/4 | NPT 1/4 | Steel | 00000000 | 0000 |
BSPP 1/4 | BSPP 1/8 | Steel | 00000000 | 00000 |
BSPP 3/8 | NPT 3/8 | Steel | 00000000 | 0000 |
BSPT 1/8 | NPTF 1/8 | Brass | 000000000 | 0000 |
BSPT 1/4 | NPT 1/4 | Brass | 00000000 | 00000 |
Metric M6 × 1 mm | UNF 1/4"-28 | Zinc-Plated Steel | 0000000 | 0000 |
Metric M6 × 1 mm | NPT 1/8 | Steel | 00000000 | 00000 |
Metric M8 × 1 mm | UNF 1/4"-28 | Zinc-Plated Steel | 0000000 | 0000 |
Metric M8 × 1 mm | NPT 1/8 | Brass | 00000000 | 00000 |
Metric M8 × 1 mm | BSPT 1/8 | Brass | 00000000 | 00000 |
Metric M8 × 1.25 mm | NPT 1/8 | Brass | 00000000 | 00000 |
Metric M10 × 1 mm | UNF 1/4"-28 | Zinc-Plated Steel | 0000000 | 0000 |
Metric M10 × 1 mm | NPT 1/8 | Steel | 00000000 | 00000 |
Metric M10 × 1.5 mm | NPT 1/8 | Brass | 00000000 | 0000 |
Metric M12 × 1 mm | NPT 1/8 | Steel | 00000000 | 00000 |
Metric M16 × 1.5 mm | NPT 1/8 | Brass | 00000000 | 00000 |
Pkg. | ||||
UN/UNF (SAE Straight) 10-32 | NPT 1/8 | 360 Brass | 00000000 | 00000 |
Each | ||||
Intermittent Swivel Adapters | ||||
NPT 1/8 | NPT 1/8 | Zinc-Plated Steel | 0000000 | 00000 |

Connection | |||||
---|---|---|---|---|---|
Male | Female | Material | Pkg. Qty. | Pkg. | |
Adapters | |||||
SAE-LT 1/4"-28 | UNF 1/4"-28 | Zinc-Plated Steel | 5 | 0000000 | 00000 |

Connection | ||||
---|---|---|---|---|
Male | Female | Material | Each | |
Adapters | ||||
NPT 1/8 | NPT 1/8 | Brass | 00000000 | 000000 |

Connection | ||||
---|---|---|---|---|
Male | Female | Material | Each | |
Adapters | ||||
NPTF 1/8 | NPTF 1/8 | 303 Stainless Steel | 0000000 | 000000 |
UNF 1/4"-28 | NPT 1/8 | Steel | 0000000 | 00000 |
SAE-LT 1/4"-28 | NPTF 1/8 | Zinc-Plated Steel | 0000000 | 0000 |
SAE-LT 1/4"-28 | NPTF 1/8 | 303 Stainless Steel | 0000000 | 00000 |
NPT 1/4 | NPT 1/4 | Steel | 00000000 | 00000 |
NPT 1/8 | NPT 1/8 | Brass | 00000000 | 00000 |
NPT 1/8 | NPT 1/8 | Steel | 00000000 | 00000 |
PTF-SAE 1/8 | PTF-SAE 1/8 | Zinc-Plated Steel | 0000000 | 00000 |