Diesel Key Cap 50 mm RINA – code: 20.568.23 – Osculati

Diesel 50 mm RINA Osculati Key Cap (cod. 20.568.23)

The key cap for Diesel Osculati is a deck accessory designed for the closure and identification of the onboard fuel refueling point. The version offered here is dedicated to the Diesel and features a neck Ø 50 mm, with flange Ø external 88 mm. The construction is described as micro-cast and mirror polished and the product is described as RINA compliant, a useful element for those who wish to maintain a setup consistent with the requirements and practices of the nautical sector.

The presence of the key and of the’lever flip opening makes the cap practical for daily handling, while the flange fully covering the screws contributes to a neater and more refined installation on deck.

Features and construction details

Finish and manufacturing

• Micro-cast and mirror polished, for a refined look and an aesthetic suitable for deck installations.
• Manufacturer's description: RINA compliant.

Type and identification

• Type: DIESEL (dedicated to the Diesel fuel circuit/tank).
• Opening: with lever flip, to facilitate access to the filler neck.
• Key lock: yes, for controlled access management.

Available sizes for this version

• Neck Ø: 50 mm
• Flange Ø external: 88 mm

Installation details and deck appearance

• Flange with full screw coverage: the screws are shielded by the flange, providing a cleaner look and additional protection for the fastening area.

Product data

• Brand / supplier: Osculati S.r.l.
• Supplier code: 20.568.23
• Category: Deck Accessories / Deck Equipment

Typical onboard applications

This cap is suitable for nautical installations where a dedicated loading/closing point for Diesel. is required. It is a suitable choice when you want to:

• maintain an clear identification the fuel supply point;
• use a component with lever opening for easier operations;
• adopt a solution with key lock to limit unauthorized or accidental openings;
• achieve a neater deck finish thanks to the screw coverage.

In maintenance and refitting contexts, it can also be useful as a replacement for an existing cap, provided the neck dimensions and flange clearance are verified for compatibility.

Operational advantages

Simplified refueling management

The’lever flip opening is designed to make access to the filler neck immediate during refueling operations, reducing the steps needed compared to less practical solutions.

Controlled access

The key lock allows more controlled opening of the cap, a useful feature in many mooring, storage, or boat-sharing situations.

Careful deck finish

The combination of mirror polishing and flange fully covering the screws contributes to a clean aesthetic result, with an appearance consistent with technical-level deck equipment.

Consistency with industry requirements

The product is described as RINA compliant: useful information for those seeking components compliant with commonly adopted nautical standards. In case of specific needs, it is always advisable to verify the requirements applicable to your installation.

Usage and important notes

Checks before purchase

• Check the neck diameter required by the system: this version is Ø 50 mm.
• Evaluate the flange bulk on deck: Outer diameter 88 mm.
• Make sure the intended use is correct: this model is for Diesel.

Installation and routine maintenance

To preserve the glossy finish and maintain a neat appearance, regular cleaning with products suitable for polished metal surfaces and periodic checks of proper closure are recommended. During installation or replacement, follow good deck installation practices and the instructions of the existing system.

Spare parts and key management

Since the cap is with key, it is good practice to manage the key as an integral part of the onboard equipment (for example, by keeping it in a dedicated place). If use by multiple people is expected, it may be useful to organize an internal procedure for access.

Note: the description lists the available features for this item (Osculati 20.568.23). For special requirements or different configurations, always check dimensions and type before installation.

FAQ – Frequently Asked Questions

Is this cap suitable for gasoline or water?

No. This version is labeled as DIESEL type and is intended for the Diesel fuel filling point.

What are the main dimensions of this variant?

For this item, the neck is Ø 50 mm and the flange has an outer Ø of 88 mm.

Is the cap equipped with a key?

Yes, the product sheet indicates the presence of the key.

What type of opening does it use?

The opening is with a flip lever, designed for practical access to the filler neck.

Are the fixing screws visible?

No, the description indicates a flange that fully covers the screws, for a neater result on deck.