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Home Shop Entry Level Fountain Pens Gravitas - Ultemate Vac Ultem
Shop All Gravitas Products

Gravitas - Ultemate Vac Ultem

€200,00 €140,00 / Sale
Shipping calculated at checkout.
4.63 (46 reviews)
Nib: Steel
Nib Size: Extra Fine
Gravitas - Ultemate Vac Ultem
€200,00 €140,00 /
Nib: Steel
Nib Size: Extra Fine

 
 
Description

Introducing the Gravitas Ultemate Vac, a groundbreaking design and Gravitas' inaugural venture into complex filling systems. This fountain pen redefines durability, incorporating titanium in key areas to ensure longevity, addressing common weaknesses found in other vacuum pens. ULTEM resin is a high performance polyetherimide thermoplastic (PEI) - used in the manufacturing process of circuit boards, sterilisation equipment and most notably in the making of aircraft parts, it offers high strength and stiffness, a broad chemical resistance, making it expensive and used for only high demanding applications.

Despite its robust construction, the fountain pen remains lightweight, featuring a transparent Ultem section that allows for easy monitoring of ink levels in the secondary chamber. Easy to clean and maintain since the whole design is put together using threads and gaskets, different from other vacuum pens assembled using glue.

The 25mm-long section, tapering from 11.9mm to 10.2mm in width, provides a comfortable grip that is well known by fountain pen users - the hour glas shape. The nib is a steel size #6 designed and manufactured by Gravitas - paired with abs plastic feeder.

With a generous capacity exceeding 2.5ml and a secondary chamber holding 0.7ml, the Ultemate Vac offers ample ink for extended writing sessions. The second chamber is equipped with a shut-off valve to prevent ink mishaps, ensuring a mess-free experience. When using the Ultimate Vac it is recommended for the end knob to be unscrewed, thus offering a more constant and wet ink flow. 

Designed for convenience, this pen can be posted and disassembled for thorough cleaning. A crucial note: when removing the nib or cleaning the pen, apply silicone grease carefully to the threads and barrel inside to maintain water-tight integrity/smooth operating plunger and prevent ink spills. 

Elevate your writing experience with the innovative and resilient Gravitas Ultemate Vac.

Specifications:

- brand: Gravitas
- type: Fountain Pen
- color: Yellow/Demonstrator
- body material: Ultem
- cap type: Screw-cap
- filling mechanism: Vacuum 
- nib material: Steel 
- nib size: Extra Fine, Fine, Medium
- postable: Yes
- trim: Silver
- length overall (closed): 150 mm
- length overall (posted): 160 mm
- body length: 142 mm
- cap length: 65 mm
- body diameter: 15 mm
- cap diameter (without clip): 16 mm
- weight (overall): 30 grams
- body weight: 25 grams
- cap weight: 5 grams

Specifications

Brand: Gravitas
Model: Ultemate Vac
Edition:
Color: Yellow and Demonstrator
Body Material: Ultem
Finish:

Cap Type:
Screw
Filling Mechanism:
Vacuum Filler
Postable:
Yes
Trim Color: Silver
Length Overall (Closed): 150 mm
Length Overall (Posted): 160 mm
Body Length (Uncapped):
142 mm
Body Diameter: 15 mm
Cap Diameter (Without Clip): 16 mm
Weight Overall: 30 g
Body Weight: 25 g

Customer Reviews

Based on 46 reviews
Write a review
80%
(37)
11%
(5)
2%
(1)
4%
(2)
2%
(1)
92.9
100.0
J
Joel Essien
Utterly blown away

9 months in, my Gravitas Ultimate Vac (B) is now a staple in my four-pen rotation, puts down a nice, juicy line and feels extremely comfortable for varied writing sessions and general brainstorming. I'm very pleased, Emy, and soon coming for Vac 2.0 😊😊😊

A
Adrienne
Amazing pen, amazing service

Fantastic pen that gives my 823 a run for its money. I’ve never gotten such a nice note from a vendor—like getting a gift from a friend. Pen shipped surprisingly fast to the United States and customs weren’t bad.

If you are even vaguely considering it—do! Great experience and amazing pen!

C
Chris

The best Jowo #6 pen body on the market. Just an overall fantastic pen. Delivery was also really quick. Im in the US and recived the item in less than a week.

S
Stephen

Excellent pen!

D
Destiny Smith
Almost Perfect!

This pen is nearly perfect!
The fit and finish of my pen is perfect, there are no gaps, chips, burrs, spurs or cowboy boots anywhere on this pen; the Ultem is polished to the point of looking like amber polycarbonate.
The filling mechanism is a vacuum filler system, but it has a secondary ink chamber between the primary ink chamber and the feed, similar to the system that an Italian pen company pioneered about 28 years ago.
The nib and feed are very smooth. I have a Fine nib, and I find the line to vary from Fine to Medium, depending on which ink and paper you use. The nib is relative wet, which makes it perfect for me, because I find Pelikan 4001 Royal Blue to be “dry” enough to cause hard starts and skips with most of my pens, but Gravitas pens seem to thrive on it. So, if you think this pen is too wet, try the Pelikan 4001 Royal Blue ink.
The cap threads…okay, yes, whenever you you force two dissimilar materials together, like an Ultem/plastic cap and metal threads, the softer material is going to wear out sooner. Oftentimes, that’s intentional; you sacrifice the cheaper/easier to replace part, but prolong the life of the more expensive/more difficult to replace part. It should be cheaper to replace a cap than the body of the pen, which is an assembly of various parts, glued together. You can minimize damage from cross threading when capping the pen by rotating the the pen and cap in an uncapping rotation, gently pushing the two parts together, until you feel the threads “snap”. Some pens may require a “double snap”. Then everything should be lined up correctly to allow you to cap the pen without damaging the pen.
On the plus side, the clear material lets you see how the precisely machined lip inside the cap meets the forward edge of the grip section, preventing the nib from drying out very quickly. Had the pen inked up, sitting on my desk, untouched, for over a week, and it started writing as soon as the nib touched paper.
Would definitely buy again if I lost this pen!

123
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Review picture
Marco Paulo Oliveira
Excellent

Very interesting pen, well balanced and with a clip that helps to carry in the jacket pocket. Excellent article

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